ISMT 2019ismt2019.org/download/2019/2019ISMT_AbstractBook.pdf · Prof. Ho-Keun Kang Korea Maritime...

ISMT 2019International Symposium on

Marine Engineering and Technology 2019

October 24 |Thu| - 25 |Fri| , 2019 │ BEXCO, Busan, Korea

Welcome Message

Organizing Committee

Program at a Glance

Information- Venue Information

- Registration

- Instruction for Presenters

- Social Program

Keynote Session

Special Session

General Session

- Day 1 (October 24)

- Day 2 (October 25)

- Poster Session (October 24)

CONTENTS

ISMT 2019 4

Welcome to ISMT 2019

We feel honored to host the International Symposium on Marine Engineering and Technology 2019 (ISMT 2019) to be held on October 24–25 at BEXCO, Busan, Korea and to be organized by the Korean Society of Marine Engineering (KOSME). ISMT is co-located with the International Marine, Shipbuilding, Offshores, Oil & Gas Exhibition (KOMARINE) as one of the joint events. ISMT aims to share the latest information and knowledge on marine engineering and technology and reinforce the social networks between researchers of the maritime countries. The symposium plays the key roles in developing eco-friendly LNG and hydrogen engine vessels, LNG bunkering vessels, autonomous operating ships, drill ships for natural resources, navy vessels, and submarines. It has become a milestone to open a new prospect in the field of marine engineering. We will invite distinguishing professors and researchers to the plenary and special sessions, which will give us talks on their research results and advanced technologies of marine engineering. Like transducer devices that convert energy into linear motion, ISMT 2019 will inspire participants with creative innovations and new collaborations between academia, government and industries. On behalf of the ISMT 2019 Organizers, we would thank all contributors for the great efforts to make this event successful. We cordially invite you to take part in this symposium and hope you to have an enjoyable time. Thank you.

Sincerely,

>> Welcome Message

Prof. Ho-Keun Kang

Korea Maritime & Ocean UniversitySecretary General

Organizing Committee, ISMT 2019

Prof. Jong-Ho Kim

Korea Maritime & Ocean University General Chair

Organizing Committee, ISMT 2019

International Symposium on


>> Organizing Committee

General Chair Jong-Ho Kim, Korea Maritime & Ocean UniversitySecretary General Ho-Keun Kang, Korea Maritime & Ocean University

Organizing MembersGil-Young Kong Korea Marine Equipment Research InstituteDae-Heon Kim Korean Register of ShippingMyung-Bae Kim Korea Institute of Machinery & MaterialsBum-Suk Kim Jeju National UniversityYou-Taek Kim Korea Maritime & Ocean UniversitySeong-Jong Kim Mokpo National Maritime UniversityJeong-Hwan Kim Korea Marine Equipment Research InstituteJong-Su Kim Korea Maritime & Ocean UniversityJeong-Gil Nam Mokpo National Maritime UniversityBeom-Seok Rho KIMFT(Korea Institute of Maritime and Fisheries Technology)Ji-Ho Ryu MAN Energy Solutions KoreaJae-Ryu Bae Daewoo Shipbuilding & Marine Engineering Co., Ltd.Dong-Hoan Seo Korea Maritime & Ocean UniversityKang-Woo Chun Korean Register of ShippingJeong-Hyeon Yang Gyeongsang National UniversityJung-In Yoon Pukyong National UniversityKyung-Hun Lee Korea Maritime & Ocean UniversityYeon-Seung Lee Korea Maritime Transportation Safety AuthorityYeon-Won Lee Pukyong National UniversityEun-Kyung Lee Korea Maritime & Ocean UniversitySung-Hwan Yoon Korea Maritime & Ocean UniversityKyung-Yul Chung Korea Institute of Machinery & MaterialsSuk-Ho Jung Pukyong National UniversityYoung-Do Choi Mokpo National University

International Organizing MembersTomoji Takamasa Japan Institute of Marine Engineering (JIME), JapanThomas Nam Lloyd Register, U.KJuha Kytola Wartsila Corporation, Finland Bjarne Foldager Jensen Man Energy Solutions, Denmark Rudolf Wettstein Winterthur Gas & Diesel Ltd., Switzerland Gasidit Panomsuwan Chulalongkorn University, Thailand Hak Mao Ministry of Environment of Cambodia Government, Cambodia Koju Hiraki Kyushu Institute of Technology, Japan Tran Hong Ha Vietnam Maritime University, Vietnam Trika Pitana Institut Teknologi Sepuluh Nopember, IndonesiaYihuai Hu Shanghai Maritime University, ChinaDong-Hoon Yoo Class NK, JapanTakashi Miwa Kobe University, JapanRaza S. Mehdi World Maritime University, SwedenTetsuyama Omatsu Japan Institute of Marine Engineering, JapanTomoshisa Dan Kobe University, JapanJong-Doc Park Kobe University, Japan

ISMT 2019 6

ISMT 2019 Program at a Glance

>> Program at a Glance

Date Day1, Thursday, October 24

Room Room 121+122 Lobby

08:30-09:45 Registration

09:45-10:00 Opening Ceremony

10:00-10:30

Keynote Sessions

[Keynote Session 1] Go Ahead for Future of Marine, JIME’s 10- year vision

Akihiko Azetsu (President of Japan Marine Engineering, Japan)

10:30-11:00[Keynote Session 2] FUTURE SHIP PROPULSION - The road to low carbon shipping

Bjarne Foldager (MAN Energy Solutions, Denmark)

11:00-11:20Special Session 1

Development of Battery System for Eco Ship Tomoji Takamasa (Toyama College, Japan)

11:20-11:40Development of electric maritime procurement system for ship’s equipment and spare parts

Thomas Nam (Lloyd’s Register Global Technology Centre, UK)

11:40-12:00Combine Exhaust Gas Recirculation, Scrubber and Emulsion Fuel Oil to control NOx and SO2 in Exhaust Gas of Marine Diesel Engine

Tran Hong Ha (Vietnam Maritime University, Vietnam)

12:00-13:10Lunch

The Party Express Food Court (B1F, Exhibition Center 1)


Poster Session

Bio Fuel Combustion toward GHG Reduction Tomohisa Dan (Kobe University, Japan)

13:30-13:50 Influence of hydrogen on combustion characteristics of various fuels Manh-Vu Tran (Monash University, Malaysia)

13:50-14:10Service Experience on iCOlube®: Intelligent Cylinder Oil Lubrication System and Its Key Role in 2020 and BeyondKenny K.W. Park (LUKOIL Marine Lubricants, Germany)

14:10-14:20 Break


Experiment on Pitch Effect of Darrieus Tidal Turbine for Twin Layout Koju Hiraki (Kyushu Institute of Technology, Japan)

14:40-15:00Estimation of Energy Efficiency Operation Indicator (EEOI) of Ships Using Automatic Identification System (AIS) DataTrika Pitana (Institut Teknologi Sepuluh Nopember, Indonesia)

15:00-15:20 Opportunities to use of Engine Plant Simulator in educational situation Takashi Miwa (Kobe University, Japan)

15:20-15:30 Break

Room Room 121+122 Room 123

15:30-15:45

General Session 1 General Session 2

Numerical Study on the Combustion Process of ME-GI Engines Using Hydrogen and Methane Mixture as Fuel

Chien Pham Van (Korea Maritime & Ocean University, Korea)Marine hybridization- Hybrid propulsion & battery energy storage with AC drives power conversion technology

Martti Alatalo (Danfoss, Denmark)15:45-16:00A study on optimization of eco-friendly refrigerant for LNG cold energy recovery: Refrigerated cargo carriers with LNG fueled system

Seunghun Lee (Korea Maritime & Ocean University, Korea)

16:00-16:15High Expansion Cycle of Marine 2-stroke Engine

Ji-Woong Lee (Korea Maritime & Ocean University, Korea)

16:15-16:30The Uneven Pool Spread of Cryogenic Liquids

Myungbae Kim (Korea Institute of Machinery & Materials, Korea)

16:30-16:40 Break

16:40-16:55


Measurement and Application of High Voltage Power Line Communication Banduidth in Electric Vehicles

JaeHwan Jeong (Korea Maritime & Ocean University, Korea)

Combustion Characteristics and Toxicity Evaluation of Bio-gasoline in Outboard Spark Ignition Engine

Kodai Nakano (Kobe University, Japan)

16:55-17:10Fire detection system with power line communication and object detection

SeungHo Yang (Korea Maritime & Ocean University, Korea)

Fuel and combustion characteristics of DME/WPO blend fuels

Kenta Kuwaoka (Kobe University, Japan)

17:10-17:25A Study on Speed and Orientation Estimation Algorithm of Welding Torch using High-pass Filter

Won Yeol Kim (Korea Maritime & Ocean University, Korea)

Effect of Droplet Diameter Distribution in Water Emulsified Jatropha Oil to Diesel Engine Performances

Kento Yokoi (Kobe University, Korea)

17:25-17:40Rules and Regulations of Fuel cells-Battery Hybrid Electric Propulsion SystemSeongwan Kim (Korea Maritime & Ocean University, Korea)

Ballast water compliance monitoring: A new application for ATP

Carine Magdo (Luminultra Technologies, Canada)

17:40-17:55Visualization of Flow Field in Electrically Assisted Combustion

SungHwan Yoon (Korea Maritime & Ocean University, Korea)

A Study on the Method for Compact SCR Reactor

Geon-myeon Bak (Heesung Catalysts corp., Korea)

17:55-18:10 Break JIME MOU (Room 126)

18:10-20:00Banquet

The Party (B1F, Exhibition Center 1)



Date Day2, Friday, October 25

08:30-09:00 Registration


09:00-09:15


Numerical Analysis of Heat Transfer and Fluid Flow in Fin and Tube Heat Exchanger with Field Synergy PrincipleMyung-whan Bae (Gyeongsang National University, Korea)

A study on the Analysis of International Convention and Code for Ships subject to the IGF Code

Hyoung-soo Yoo (Korea Institute of Maritime and Fisheries Technology, Korea)

09:15-09:30

Visualization of Flame Propagation Behaviors in a Quarter-Wavelength Resonator

Kwangho Son (Korea Maritime & Ocean University, Korea)

A Study on the Weight Analysis of Fire Scenario Factors using Text Mining Techniques

Byeol Kim (Korea Maritime & Ocean University, Korea)

09:30-09:45

Fundamental design of a radial outflow turbine for a supercritical carbon dioxide power generation cycle

Jun-Seong Kim (Korea Maritime & Ocean University, Korea)

Correlation-based Approach for Heart Rate Extraction using UWB Impulse Radar

Dang Khanh Le (Vietnam Maritime University, Korea)

09:45-10:00

Performance enhancement of an axial flow pump model by improving design of impeller

Ujjwal Shrestha (Mokpo National University, Korea)

10:00-10:10 Break

Room Room 121+122

10:10-10:30

Special Session 4

Outlines of Guidance for onboard use of Compliant Fuel Oil with SOx regulation from 2020

Dong-Hoon Yoo (ClassNK, Japan)

10:30-10:50English Proficiency Skill Using Global Educational Program for Maritime Colleges in Japan

Jongdoc Park (Oshima College, Japan)

10:50-11:00 Break


11:00-11:15


Visualization of Big Data Analysis Result for Selection of Suitable Location for Floating Ocean Wind Power Facility: Focusing on Historical Weather Data

Jun-Ho Huh (Korea Maritime & Ocean University, Korea)

Effect of Heat Treatment on Mechanical Property of HWS deposited by Directed Energy Deposition

Junyeop Lee (Korea Maritime & Ocean University, Korea)

11:15-11:30

A Study on the Real time Fault Detection and Diagnosis System for Onboard Engine Room

Yung Ho Yu (Ocean and Ship ICT Convergence, Korea)

Analysis of Corrosion Resistances of High Interstitial Stainless Steels for a New Drill Collar Material in NaCl and H2SO4

Cheolmin Ahn (Korea Maritime & Ocean University, Korea)

11:30-11:45

A Key Position Algorithm Improving the Indoor Positioning Accuracy for Crew's Safety

QIianfeng Lin (Korea Maritime & Ocean University, Korea)

Effect of sediment characteristics on the sediment erosion in Francis Hydro turbine

Ujjwal Shrestha (Mokpo National University, Korea)

11:50~13:00Lunch

The Party Express Food Court (B1F, Exhibition Center 1)

ISMT 2019 8

| Venue Information

| Floor Information

>> Information

▼ ▼

Exhibition Center 1(Banquet, Lunch B1F)

Exhibition Center 2(Conference Venue)

BEXCO Exhibition Center 2

Ground Floor (1F), Exhibition Center

Lobby Area- Registration

- Poster Presentations

Room 123- General Sessions

Room 121+122- Opening

- Keynote Sessions- Special Sessions- General Sessions

Main Entrance



| Registration

Registration

On-site registration is possible at the registration desk. Conference staff members will be available at the registration desk to help you and to answer any question related to the conference. The registration desk can be found on the ground (1F) floor lobby of Exhibition Center 2, BEXCO.

Registration Desk Opening Hours

October 24 (Thu): 08:30~18:00October 25 (Fri): 08:30~11:00

On-site Registration Fee

The registration fee for participants includes access to and availability of the followings;

- All technical sessions- Coffee, tea, and other refreshments- Banquet and 2 lunches- Registration package including the abstract book

* Technical sessions are not open to accompanying persons.

Presenter USD 400 / KRW 400,000

Participant USD 250 / KRW 250,000

ISMT 2019 10

Oral Presentation

Each presenter has a maximum of 15 min for his/her presentation (10 min for the presentation, and 5 min for discussion and questions). The session chair will strictly enforce time limits so that no one can monopolize someone else’s time. This is to allow the participants to move from one session to another without missing any of the presentations.The official format of the presentation is via a data projector using Microsoft PowerPoint (versions 97–2003, 2007, or 2010). All presenters must bring their presentation (file in USB) to the conference room before the session begins for the smooth operation of the session as the presentation time is very short. There would be a technician and a group of volunteers in the conference room ready to assist you in uploading your presentation to the correct session. In case of using a personal Mac, please make sure to bring a VGA adaptor and to test it first in the conference room before the presentation.

Poster Presentation

Poster sessions are an important part of the conference, and a method for immediate and effective communication between all those interested in specific subjects, actions, or programs. Posters should be carefully designed and prepared to ensure their full impact.

The poster presenters are kindly requested to follow the following instructions: • All poster presentations should be in English. No other languages will be accepted.• Each poster should include the title (preferably at the top), as well as the names and affiliations of the authors.• Posters must not exceed the following dimensions (A0 size): 841 mm (width) × 1,189 mm (height)• Posters are recommended to be printed in one single piece.

Poster Mounting and Dismounting

Poster presenters are kindly requested to mount and dismount their posters during the periods mentioned as follows. Please note that all posters that have not been removed by 18:00 on October 24 (Thu) will be automatically taken down and discarded.

Conference staff members will be ready to provide assistance with poster-mounting materials.• Mounting Schedule: October 24 (Thu), 12:40~13:10• Dismounting Deadline: October 24 (Thu), 17:30~18:00

| Instruction for Presenters



| Social Program

▷ Lunch for Participants

Lunch will be served in the “The Party Express Food Court” B1F at Exhibition Center 1. Please check your lunch coupon in your name badge

▷ Banquet

Banquet will be held in “The Party BEXCO Branch (Buffet)” B1F at Exhibition Center 1.

B1F, Exhibition Hall 1

Day 1 - 18:10~20:00

Day 1 - 12:00~13:10Day 2 - 11:50~13:00

▼

Food Court for

Lunch

▼

The Party(Banquet)

Keynote Session October 24 (Thu), 2019

| Session Chair |

Ho-Keun Kang_ Korea Maritime & Ocean University, Korea




ISMT 2019 14

The environment surrounding the marine engineering field is changing rapidly. When we look

at marine engines, the attention shifted from the development of technologies aimed at achieving

high output in the early stages to competition to achieve greater fuel economy. Then until recently,

measures to reduce exhaust emissions to satisfy NOx regulations were the major challenge in this

field. Now that the Paris Agreement has come into effect to address the global warming issue, its

effects are spreading to maritime transport and maritime industries. The strategy on the reduction

of GHG emissions from ships, adopted by MEPC in 2018, requires us to achieve the goal of zero

GHG emissions from ships during this century. The path towards this goal is not yet clear and this

is one of the greatest challenges facing to the marine engineering field. On the other hand, the

marine engineering field is facing another big problem of the decrease of the engineers in the marine

engineering field. The number of the member of the Japan Institute of Marine Engineering is also

decreasing which is a serious problem to tackle with the major challenge of GHG zero emission.

Given this, it is necessary for JIME to respond to these problems and a committee was established

within the society in FY2018 to formulate JIME’s 10-year vision. After extensive discussions, we

set the following three goals for JIME’s 10- year vision under the slogan of "Go Ahead for Future of

Marine".

1. A society that contributes to sustainable development of the maritime industry

2. An open society where everyone can play an active role

3. A society that actively engages in overseas exchanges

With regard to the first goal, it is necessary to nurture the next generation of engineers who can

contribute to the maritime industry. It is also significant to promote technological development by

Go Ahead for Future of Marine, JIME’s 10-year vision

Akihiko AzetsuPresident of Japan Institute of Marine Engineering , Japan

| Keynote Session | Day 1 (Thu) 10:00~10:30 / Room 121+122



sharing industrial needs and the seeds of universities and research institutes. When it comes to

the 2nd goal, it is important to create the environment where people from different age groups can

participate in academic activities. Concerning the 3rd goal, we will develop global activities with

other academic societies in the maritime field. To realize these goals, we need to make active use of

information and network technologies centered on the Internet.

Education

1983 Graduated Ph.D. degree, the University of Tokyo

1983 Joined Mechanical Engineering Laboratory, Agency of Industrial Science and

Technology as Researcher

1986 Promoted as Assistant Professor, University of Tokyo

2002 Promoted as Professor, Tokai University

Akihiko AzetsuPresident of Japan Institute of Marine Engineering, Japan

| Keywords | 10 year vision, Marine engineering, Education

ISMT 2019 16

Ship emissions are increasingly regulated. Today local pollutants such as NOx emissions for newly built ships are to meet IMO Tier II as a minimum and IMO Tier III in the US and North American coastal waters, and in the future more designated areas for NOx Tier III compliance will be enforced.

By 2020 a global sulphur cap of 0.5%S worldwide will be in force and in designated areas the maximum allowed sulphur content is capped at 0.1%S (or equivalent by the use of Exhaust Gas Cleaning Systems). Particulate matter is currently not controlled by legislation but it can be expected in the future. Now, on top of this, the global climate challenge involving significantly reduced emissions of CO2 and other green house gasses like methane through the entire well to wake process has come high on the agenda with the ultimate goal of a completely decarbonized operation of ships.

This will lead to great changes in the future design and fueling of ships. Efficiency per transported unit will remain key to obtain significant GHG reductions and efficient energy utilization.

In ship propulsion the search for optimization and improvements of the efficiency is not new. In times of high fuel oil prices many supporting technologies have been developed and applied, but we are now on the door step to seeing the entire portfolio of solutions applied in new ways according to need. The system that will be dominating in the future ship propulsion will be the system that integrate well with the ship and meet all environmental requirements while at the same time utilizing the energy to the highest degree and comes with a reasonable CAPEX, and can be safely and reliably operated by a well-trained crew. The two-stroke engine will also in the future be the solution to these requirements. This paper will also review various competing systems such as battery driven, gas turbine, fuel cell/all electric ship, autonomous ships, and nuclear. The development plans for EEDI and MPP will be discussed.

Various means of efficiency optimization like hull and propeller optimization incl. Kappel + ESD, single-screw/twin-screw, G-engines, derating, part load optimisation, EcoEGR, HPB, WHR is discussed.

FUTURE SHIP PROPULSION - The road to low carbon shipping

Bjarne FoldagerMAN Energy Solutions, Denmark

| Keynote Session | Day 1 (Thu) 10:30~11:00 / Room 121+122



| Keywords | Merchant, Propulsion, Future Fuels, MAN Energy Solutions

Emphasis is on new fuels: LNG, methanol, methanol+water (Tier III), ethane, LPG, biofuels, H2/LH2, ammonia and other potential energy carriers.System integration: The application of many of such technologies in one ship requires careful system integration to harvest the full potential of each technology and obtain a well-functioning ship. It is needed not only to look at separate technologies or for instance even the propulsion technology alone but to consider the overall integration of systems that may benefit of integration with other ship systems. As an example the auxiliary systems supporting the main engine and auxiliary engines can benefit of being performance optimized for the lowest possible energy consumption for instance using frequency control of electric motors driving the equipment, but on top of that also some integration between each set of auxiliary equipment may be desirable. The electric power needed to drive the systems can be generated using fully or partly the gensets or a PTO from the main engine or power generated by a waste heat recovery system. Electric energy can be stored in batteries for optimal usage in the varying operating modes. MAN ES has extensive knowledge on main engine and genset optimization including the entire supporting machinery and electrical systems, and will support our licensees and other customers with the needed development of our product portfolio and by providing the needed system consultancy.

Education

EMBA, IMD Lausanne, Switzerland Programme for Executive Development, IMD Lausanne, Switzerland Building on Talent, IMD Lausanne, Switzerland International Trade Law, New York University, USAA.P. Moller Shipping School, Denmark

Career

1991-1993 Shipping Trainee, A.P. Moller – Maersk Group, Copenhagen 1993-1994 Assistant Operations Manager, Maersk Tankers, Copenhagen1994-1995 Operations and Sales Manager, Maersk Tankers, New York1995-2005 Operations Manager, Maersk Tankers, Copenhagen2005-2008 Head of Fleet Management, Maersk Line, Copenhagen2008-2011 Managing Director, A.P. Moller Singapore, Singapore and Head of Maersk Crew Management, Singapore2011-2014 Managing Director, Maersk Malaysia Sdn Bhd, Malaysia, Singapore & Brunei2014-2016 Global head of operations, Maersk Tankers, Copenhagen2016-2018 Vice President, Sales & Promotion, Two-stroke Business, MAN Energy Solutions2019- Senior Vice President, Head of Two-Stroke Business, MAN Energy Solutions

Bjarne Foldager is Senior Vice President, Head of Two-Stroke at MAN Energy Solution, Copenhagen and also globally responsible for the sales & promotion activities of MAN B&W Two-stroke engines and marine GenSets. In addition he serves as Country Manager for MAN Energy Solutions, Denmark.

Prior to this Bjarne Foldager worked more than 25 years in the A.P Moller Group where he held a number of different positions in Maersk Tankers and Maersk Line. He has international experience and besides Denmark has lived and worked in New York, Singapore and Malaysia. He has worked with all operational and commercial aspects of international shipping and been involved in multiple change processes.

Today he enjoys life in Denmark with his wife and three children and enjoys travelling to new countries and learning about the different cultures.

Bjarne FoldagerSenior Vice President, Head of Two Stroke Business, MAN Energy Solutions, Denmark



Special Session 1 October 24 (Thu), 2019, Room 121+122

| Session Chair |

Sung-Hwan Yoon_ Korea Maritime & Ocean University, Korea




ISMT 2019 20

Recently, global environmental issues have come in for a lot of international attention.

Reducing environmental pollution is one of the important measures for addressing these issues

and one example would be minimizing the amounts of exhaust gas generated, especially in

coastal bay and inlet areas, by ships that are propelled by internal combustion engines to achieve

Sustainable Development Goals (SDGs). In order to prevent air and water pollution from ships, zero

emission vessels are desirable. However, adoption of environment-technologies in the field of sea

transport lag behind that for land transport and automobiles. Electric vehicle technologies such

as high-powered lithium-ion batteries, rapid-charging systems, etc. are being developed, mass-

produced and marketed. This presentation presents a battery system and a pure hydrogen fuel

cell system which have been developing the electric boats called “Raicho project” over a decade at

Tokyo University of Marine Science and Technology and National Institute of Technology, Toyama

College, and then discusses installation of the systems considering the safety issues involving the

regulation aspects. A modal shift to use of such a battery system could lead to significant reduction

in generation of environmental pollution by sea transport vessels

Development of Battery System for Eco Ship

Tomoji TakamasaNational Institute of Technology, Toyama College, Japan

| Special Session1 | Day 1 (Thu) 11:00~11:20 / Room 121+122

| Keywords | Lithium-ion battery powered boat, Pure hydrogen fuel cell, Regulation, Safety



Tomoji Takamasa is President of National Institute of Technology Toyama College, former

President of the Japan Institute of Marine Engineering, and Chair of International Symposium

on Marine Engineering 2017 Tokyo. He obtained his PhD from the University of Tokyo in 1987,

after studying at Tokyo University of Mercantile Marine, and worked for Mitsui O.S.K. Lines,

Ltd. as a marine engineer as well as for Tokyo University of Marine Science and Technology

(TUMSAT) as aprofessor. From 2008 through 2012, he served as Dean of the Graduate School

of Marine Science and Technology and, from 2012 through 2015, he was an Executive Director

(Research and International) and Vice President of TUMSAT. He transferred to Toyama College

in 2017. His areas of expertise include thermo-hydraulics and eco-safety systems in marine

engineering, and naval architecture.

Tomoji TakamasaNational Institute of Technology, Toyama College, Japan

ISMT 2019 22

We live in an age where everything in our personal lives is digitised. Amazon has made buying

everything you want as simple as clicking a button on your smartphone. The change in mindset

is creeping into the shipping industry too. Smart buying is replacing reactive buying, AI is being

used to monitor voyage data and optimization of the entire supply chain is pushing great change.

The first movers have taken their initial steps with an idea of a true electric market place which

will allow you to see price, stock and delivery times with such a platform. At present the industry

is divided over whether an Amazon-style emarketplace, at scale, will work for shipping, whether

it’s viable or even necessary. Is it feasible for maritime industry and in particular for the ship spare

parts market?

This paper tries to answer this question by overviewing some early movers in Europe and South

Asia for an electric maritime procurement system for ship’s equipment and spare parts. Then moves

on to the main concept of Amazon-style emarketplace for ship spare parts. Further it provides a

preliminary research of global market size and annual demand per ship. Finally, it presents the

reasons why Korea is best placed for developing such a platform and the benefits Korea maritime

industry may enjoy from being the first runner of this emerging market.

Development of electric maritime procurement system for ship’s equipment and spare parts

Thomas NamLloyd’s Register Global Technology Centre, UK


| Keywords | Electric procurement, Maritime, Ship, Equipment, Spare parts



EXECUTIVE SUMMARY

Qualification : PhD in Maritime Law MSc in Maritime Safety & Environmental ProtectionCareer summary : Maritime regulatory professional with extensive carrier experience in

Class rules and regulations, IMO conventions and codes, IACS technical resolutions, Flag State specific regulations, Port State Control regimes and ship building industry standards.

Over 28 years of professional experience in the marine industry, including 11 years at Lloyd’s Register, 13 years at Korean Register as a Class surveyor and 4 years of sea-going experience as a ship engineer officer.

Professional Experience

Sep 2014 - present Lead Specialist - Governmental affairs Lloyd's Register, UK Head office, Regulatory Affairs department

– ·Responsible for maintaining relationships with flag States worldwide, including maintenance of agreements for delegation of statutory

certification services.

– ·Participate at IACS Expert Group on Data meetings as the LR representative for industry wide implementation of data exchange protocols.

– ·Attend IMO meetings and take follow-up actions as required in particular at III Sub-Committee as United Kingdom delegation

·Liaise with flag states for future implementation of international regulations adopted by international regulatory bodies and seek flag states’positions on statutory issues

Thomas NamLloyd’s Register Global Technology Centre, Southampton, UK

ISMT 2019 24

Marine diesel engine mainly use heavy fuel oil with high-sulfur as fuel, making its main

pollutants become nitrogen oxides (NOx), sulfur oxides (SOx) and particulate matters (PM). It’s

urgent to reduce the pollutants using advanced technology. In this work, a combined approach is

studied to simultaneously control SOx and NOx from combustion of heavy fuel oil. This combined

approach is consisted of the Emulsion fuel instead of regular fuel oil, as well as, scrubber and

exhaust gas recirculation (EGE) system installation. The wet scrubber system removes the SOx

by 93% but has no influence on NOx. The water content up to 30% of HFO volume is used to

synthesize the Emulsion at optimum performance. The dimensions of fuel droplet are in micro

scale (10-11–m in diameter). The Emulsion usage removes the NOx by 30%. The approach of

Emulsion usage and wet flue gas desulfurization leads to simultaneous reduction of SOx and NOx

in accordance with the IMO standard. Results show that the combined approach decreases the SOx

and NOx 93.3% and 70%, respectively that satisfied the IMO standard.

Dr. Tran Hong Ha received his Ph.D. in Marine Engineering from the Kobe University in 2010.

After completion of his degree he was appointed as a Head of Automation division in the

Department of Marine engineering at the Viet Nam Maritime University from 2011 to 2014. In

2015. Dr. Ha joined the Research and Development Institute at Viet Nam Maritime University

and was appointed as a member in Institute. From 2015 to 2019 he was appointed as a Head

of Automation Fluid Power division. His research focused on the development of the system to

prevent air pollution from ship

Combine Exhaust Gas Recirculation, Scrubber and Emulsion Fuel Oil to control NOx and SO2 in Exhaust Gas of Marine Diesel Engine

Tran Hong HaFaculty of Marine Engineering, Vietnam Maritime University, Vietnam

Tran Hong HaFaculty of Marine Engineering, Vietnam Maritime University, Vietnam


| Keywords | Emulsion fuel oil, Scrubber, Diesel engine






| Session Chair |

Suk-Ho Jung_ Pukyong National University, Korea




ISMT 2019 26

The Paris Agreement under UNFCCC and discussions at MEPC of IMO have decided to reduce

GHG emissions toward zero level until the end of this century. Internal combustion engines those

use hydrocarbon fuels can’t avoid to emit GHG emissions, especially CO2. Therefore, it is needed to

reduce CO2 emission from the engines, and utilization of bio fuels is one of the solutions. Because

of the carbon neutral aspect, biomass is regarded as the zero CO2 emission fuel. In this article, some

experimental results about bio fuels’ combustion in diesel engines are summarized to indicate their

effect to engine performances.

Bio Fuel Combustion toward GHG Reduction

Tomohisa DanKobe university, Japan

| Special Session 2 | Day 1 (Thu) 13:10~13:30 / Room 121+122

| Keywords | Bio fuel, Engine performance, Fuel combustion, Combustion state,

Diesel engine



He has been studying about internal combustion engines since 1990. Primary subject is the

diesel engine, and its fuel spray and combustion. He has been conducting experimental and

numerical studies in the field of fuel spray atomization, and been conferred Ph.D. degree of

Engineering in March 1997 by Doshisha University (Kyoto, Japan) with dissertation entitled

"Atomization Mechanism and Turbulent Structure of Diesel Fuel Spray".

After that, he continued his research works as a postdoctoral research fellow of JSPS (Japan

Society for the Promotion of Science) from April, 1997 to July, 1999. During the post doctor

period, he joined partly in projects conducted at Wayne State University (Michigan, USA) by

Prof. Ming-Chia Lai for researching in fuel sprays of diesel engine.

In August 1999, he has belonged to Kobe University of Mercantile Marine (currently merged

with Kobe University) as a faculty staff, and began to make research works, additionally, about

alternative fuels for engines and marine engineering including ERS (Engine Room Simulator).

In April, 2013, he became a Professor of graduate school of Maritime Sciences, Kobe University.

Tomohisa DanKobe University, Professor of Maritime Sciences, Japan

ISMT 2019 28

The primary source of the world’s energy supply is conventional fossil fuels–oil, natural gas,

and coal–which are depleting, limited and unsustainable in the long term. Thus it is necessary for

seeking alternative fuels replacing fossil fuels and reducing the greenhouse effect.

Syngas, which contains primarily of hydrogen and carbon monoxide, is a candidate for energy

conversion, due to its numerously significant advantages for use as a fuel in stationary power

generation [1-3]. Syngas is formed through a gasification process of coal, biomass, organic wastes,

and refinery residual. It might also include nitrogen, carbon dioxide, water, methane, and other

higher-order hydrocarbons; the specific composition depends on the feedstocks and processing

technique.

Biogas, which consist of primarily methane and carbon dioxide, also draws lots of attention in the

field of combustion research [4]. However, biogas has certain challenges restricting its use in the

application of engine because biogas has a high content of CO2 in the mixture. Hydrogen enriched

biogas flames can be considered as a positive solution in enhancing combustion efficiency of

biogas flame.

In combustion, hydrogen has been widely used due to its advantages such as high burning

velocity and environmentally friendly combustion products [5,6]. Hydrogen leads the cells on

the flame surface to occur earlier, which can induce turbulence in the unburned mixture and

cause a rapid increase in the flame propagation velocity. Studying the influence of hydrogen on

combustion characteristics of fuels is necessary in order to design efficient combustion devices,

predict operation and emission of combustion systems, clarify safety issues for transportation,

storage, and utilize hydrogen effectively. In this presentation, influence of hydrogen on combustion

characteristics, such as burning velocity, flame structure, cells formation, explosion behavior, of

syngas and hydrogen/biogas flames are discussed

Influence of hydrogen on combustion characteristics of various fuels

Manh-Vu TranSchool of Engineering, Monash University, Malaysia


| Keywords | Hydrogen, Syngas, Biogas, Burning velocity, Explosion



Education

2007-2010 Doctor of Engineering, Pukyong National University, Busan, Korea

2005-2007 Master of Engineering, Pukyong National University, Busan, Korea

1998-2003 Bachelor of Engineering, University of Technology, Vietnam National University

– Ho Chi Minh City, Vietnam

PROFESSIONAL EXPERIENCE

2019-present Senior Lecturer, School of Engineering, Monash University Malaysia

2016-2018 Lecturer, School of Engineering, Monash University Malaysia

2012-2016 Postdoctoral Fellow, King Abdullah University of Science and Technology

(KAUST), Saudi Arabia 2010-2011 Postdoctoral Fellow, Pukyong National University, Korea

Manh-Vu Tran, Ph.D. School of Engineering, Monash University, Malaysia

ISMT 2019 30

LUKOIL Marine Lubricants, as technology leader in the marine lubricants business has

implemented several developments in the market over the last years. One of the key developments

for the marine Lubricants market was the development of the BN 100 oil, NAVIGO 100 MCL, a

development which was anticipated by the marine engine manufacturers, and followed by all major

competitors in the market who have brought out their high BN products over the last year.

Keeping in mind that a BN 100 oil does make sense for the latest engine designs under running

conditions which are known of causing cold corrosion like slow steaming, high air humidity and

high fuel sulphur content, it is clear that this conditions are not always met and therefore a BN 100

oil is not always necessary. This is why we have developed the iCOlube®, the Intelligent Cylinder

Oil Lubrication system to meet the requirements of an engine under the certain running conditions.

The iCOlube® is providing the optimal BN of the cylinder oil in regard of the conditions at the lowest

possible cylinder oil feed rate.

Service Experience on iCOlube®: Intelligent Cylinder Oil Lubrication System and Its Key Role in 2020 and Beyond

Kyong Won(Kenny) ParkTechnical & Marketing EngineerLUKOIL Marine Lubricants, Germany




Education and Career Milestones

- Received a Bachelor of Science Degree in Marine Engineering and Machinery Design at Korea

Maritime University, Korea in 1995.

- Built a career in maritime industries as a marine engineer, superintendent, technical manager

for 25 years.

- Joined LUKOIL Marine Lubricants in 2013 and since then, as a Technical & Marketing

engineer, has been looking after optimization of machinery lubrication, OEM field trial and

performance evaluation for new developed products.

- He is especially, expert in cylinder lubrication for 2 stroke engines with iCOlube which

produces tailor-made cylinder oil onboard in line with sulphur content in fuel in use.

Mr. Kyong Won(Kenny) ParkTechnical & Marketing Engineer

LUKOIL Marine Lubricants, Germany




| Session Chair |

Eun-Kyung Lee_ Korea Maritime & Ocean University, Korea




ISMT 2019 34

Darrieus turbine with straight blades has an advantage over a horizontal-axis turbine in the

simplicity and in independency to a current direction. In order to improve the self-starting capability

of Darrieus turbine, the pitch angles of the blades are varied and tested in a low-speed wind tunnel.

The generated torque on the turbine is measured by the torque meter in a tip-speed ratio up to 1.2.

It is found that the blades with a pitch angle of 6 and 10 degrees can generate the positive torque

throughout the tip-speed range tested. It can make a self-start without any difficulty. The output

power is also measured by changing the pitch angle of the blade. As a result, the pitched blade by

6 degrees gives the highest peak of the power coefficient. The output is increased by more than 30

percent from the one obtained by the none-pitched blade.

Experiment on Pitch Effect of Darrieus Tidal Turbine for Twin Layout

Koju HirakiKyushu Institute of Technology, Japan


| Keywords | Darrieus turbine, vertical-axis turbine, Pitch variation, Torque, Efficiency



He graduated from the University of Tokyo in 1990, and received a Master’s degree of

Engineering in Graduate School at the University of Tokyo in 1992. He joined in the Institute of

Space and Astronautical Science and devoted himself in the development of the sample return

capsule of Hayabusa spacecraft and of Mu-Five launch vehicle. He received a Doctor’s degree

of Engineering in Graduate School at University of Tokyo in 1998. He joined in Kyushu Institute

of Technology in 2003, and is currently a professor in the department of Space Systems

Engineering. His research area includes dynamics of drones and turbines.

Koju Hiraki, Dr. EngProfessor / Department of Space Systems Engineering / Faculty of Engineering

Kyushu Institute of Technology, Japan

ISMT 2019 36

Since the development of diesel engine, maritime industry always shows an upward trend.

This has consequences of increasing the amount of air pollutant, specifically CO2. As the global

authorities, IMO taking an action written in MEPC 304(72) to reduce greenhouse gas emission. This

research purpose to estimate Energy Efficiency Operational Indicator (EEOI), as written in MEPC

282(70) that part of Ship Energy Efficiency Management Plan (SEEMP) by benchmarking fuel oil

estimation method proposed by Trozzi, Jalkanen, Wang, and Mersin. Then estimation results of

each method are compared with the actual fuel consumption of two containers ships trough ship’s

bunker report, showing 100,53%, 24,3%, 18,44%, and 36,22% error respectively. Therefore, it can

be concluded that wang’s method is less error than the others and considered the most accurate

method of fuel consumption estimation. Then EEOI of each ship is possible to be estimated by

utilizing fuel consumption estimation method. The results show that average EEOI index for

Container ship 1 is 0,000473 tonCO2/TEUS.nm anda a ship container 2 is 0,000630 tonCO2/TEUS.

nm. It is indicated that in Container ship 1 has lower operational efficiency than a ship container 2.

In addition, it can be concluded that EEOI is possible to be estimated by combination of AIS data

dan appropriate fuel oil consumption estimation method.

Estimation of Energy Efficiency Operation Indicator (EEOI) of Ships Using Automatic Identification System (AIS) Data

Trika PitanaInstitut Teknologi Sepuluh Nopember, Indonesia


| Keywords | EEOI, Fuel Oil Consumption, AIS, Air Pollution



QUALIFICATIONS EDUCATION

Kobe University Qualifications gained : Doctor of Engineering (Dr.Eng) (Include major subjects and grades)

WORK HISTORY

1999-presen : Institute of Technology of Sepuluh NopemberMarine Engineering DepartmentJob Title : A Lecture

2016 - present : Directorate of International CooperationInstitute of Technology of Sepuluh NopemberJob Title : Deputy Director of International Partnership

2016 - present : Institute of Technology of Sepuluh NopemberMarine Engineering DepartmentJob Title : Associate Prof

INTERNATIONAL AWARDS

2004-2005, Scholarship Award from Sasakawa Fellowship/Nippon Foundation for Master Degree

2006-2009, Scholarship Award from Monbukagakusho (Ministry of Higher Education Japan), Japan for Ph.D degree.

2012, K.D. Tocher Medal Award dari Operation Reseseach Society, UK, London, the best paper in Journal of Simulation, Vol.3. pp.235-247, 2009, Palgrave Macmilan having title “ Optimization of ship evacuation procedure as part of tsunami preparation”. Today he enjoys life in Denmark with his wife and three children and enjoys travelling to new countries and learning about the different cultures.

Trika PitanaInstitut Teknologi Sepuluh Nopember, Indonesia

ISMT 2019 38

Recently, the demand of engine room simulator reality is getting higher. Several manufacturers

provide the 3 dimensional animation or computer graphic image which used virtual reality

technology. The hardware of educational tools is improving day by day. As one of educational

institute researchers, we consider how to plan for effective exercise in a simulator environment.

Except the hardware matters, there are remaining software matters in educational situations. One of

the difficult solvable problems is adjusting the level of training difficulty which depend on student

levels. To adjust the task difficulty, we need to know what is being difficult for the student. This

paper expressed one of result the difficulty of understanding in simulator training by questionnaire

survey.

Opportunities to use of Engine Plant Simulator in educational situations

Takashi MiwaKobe University, Japan


| Keywords | Engine room simulator, Difficulty of simulator exercise



Takashi Miwa, Ph.D is in marine engineer department associate professor whom belongs Center

of maritime education and research in Kobe University. In Kobe University, He is in charge

of 3rd grade Marine engineer education which licensed by Ministry of Land, Infrastructure,

Transport and Tourism in Japan.

He graduated Tokyo University of Mercantile Marine in 1995. And He starts his engineer's life at

Training ship which are belongs Ministry of Transport (now Japan agency of Maritime Education

and Training for Seafarers). He took the certification of 1st grade Marine engineer in 2002.

Then, he worked as a Chief engineer of Training Ship in Kobe University from 2004 to 2005.

He was awarded Ph.D (Engineering) of Kobe University in 2012. His research Therma was a

sound inspection for detecting loose bolt in the crank case of Marine propulsion engine. That

was to detect of loosening sound which hammered by inspection hummer, by discrimination

analysis with Mahananobis’s generalized distance.

Now, He works as a marine engineering department teacher since 2013 in Kobe University. He

has some lectures for engine department student who will be a marine engineer in the future.

Also, He is in-charge of Engine room simulator training exercise mainly.

Recent years, He considers how to conduct the effective exercise for students in the simulator

environment. He creates the several experimental set up to research of human behavior in

the laboratory. As making real engine room condition, He research accuracy of noisy work

environment, the bolt tightening work at different height of pipe, and piping diagram reading

task.

Takashi Miwa Associate Professor, Center of maritime education and research

Kobe University, Japan



Special Session 4 October 25 (Fri), 2019, Room 121+122

| Session Chair |

Jeong-hyeon Yang_ Gyeongsan National University, Korea




ISMT 2019 42

In order to prevent adverse effects on human health and air pollution caused by ship’ exhaust

gas, Regulation 14 of Annex VI of the International Convention for the Prevention of Pollution from

Ships (MARPOL 73/78) has been amended so as to take control measures to reduce emissions

of Sulphur Oxides (SOx) and Particulate Matter (PM) from ships. From January 1st, 2020, Sulphur

concentration of any fuel oil used on board ships will be tightened from the current requirement of

3.50% m/m to 0.50% m/m outside emission control areas (ECAs).

For ensuring sufficient supply of fuel oil that complied with the 0.50% m/m sulphur limit from

2020, it is assumed that compliant fuel oils will include various low-sulphur blendstocks more

than ever, in addition to light distillates. In such the compliant fuel oils, the ratio of blendstocks

may vary widely among continents or regions compared to current heavy fuel oil. According to the

variety of the ratio of the blendstocks, fuel properties would vary more significantly than that of the

current fuel oil.

ClassNK has issued ‘Guidance for onboard use of Compliant Fuel Oil with SOx regulation from

2020’ in March 2019. In the guidance, five fuel oil properties have been focused and identified

for the safe use onboard of the varied compliant fuel oil. Guidance provides potential safety

implications, and also provides technical advice on mitigation measures.

The outlines of the Guidance will be introduced in this presentation.

2010 graduated Ph. D. degree, Kobe University

2011 joined National Maritime Research Institution

2016 joined Nippon Kaiji Kyokai (ClassNK)

Outlines of Guidance for onboard use of Compliant Fuel Oil with SOx regulationfrom 2020

Dong-Hoon YooClassNK, Research Institute, Japan

Dong-Hoon YooClassNK, Research Institute, Japan

| Special Session 4 | Day 2 (Fri) 10:10~10:30 / Room 121+122



Maritime officers are specialists handling ship navigation and maritime engineering. They need

expertise in the maritime technology and keen English communication skills at the same time.

The maritime technology departments in the five National Institute of Technology (NIT) colleges in

Japan namely Toyama, Toba, Hiroshima, Yuge and Oshima college have been developing English

educational programs and sharing together to train Japanese international ship officers. The

English study and training program has been performed in the Philippines or Singapore with the

sustainable project since 2006. This paper reports how the English educational programs work for

Japanese students so far. For the second step, one of the NIT colleges, Oshima College decided

to send a faculty to the Maritime Academy in the Philippines or Singapore of the partner schools

based on the faculty exchange program. The faculty was requested to conduct the technical

educational program in English. A survey questionnaire was conducted when the program was over

amongst the local students, and analyzed about the invited foreign instructor depending on each

year and course. The results reflect how we should prepare course information and understandable

topics as well as teaching skills by using the active learning style. Consequently, the English

teaching experience worked for Japanese instructors at Philippines, Singapore, Malaysia and Korea

where we had a privilege to teach.

EDUCATION

2003-2006 Kobe University, Major: Heat transfer engineering

Degree: Doctor of Engineering

1997-2000 Korea Maritime University Graduate School,

Major: Thermo & Hydromechanics

Degree: Master of Engineering

WORKING EXPERIENCE

2016-the present Toyohashi University of Technology (in Japan) Project Associate Professor

2015-2016 Toyohashi University of Technology (Japan)- Queens College (USA) -Universiti Sains Malaysia (Malaysia) Global Faculty Development project

2006-the present National Institute of Technology (KOSEN), Oshima College (in Japan) Associate Professor

English Proficiency Skill Using Global Educational Program for Maritime Colleges in Japan

Jongdoc ParkNational Institute of Technology, Oshima College, Japan

Jongdoc ParkNational Institute of Technology, Oshima College, Japan

| Special Session 4 | Day 2 (Fri) 10:30~10:50 / Room 121+122

| Keywords | Maritime officer, Maritime English, NIT maritime colleges



General Session Day 1 (October 24) GS01~04

Day 2 (October 25) GS05~08

Poster Session Day 1 (October 24)




ISMT 2019 46

Numerical Study on the Combustion Process of ME-GI Engines Using Hydrogen and Methane Mixture as Fuel

Chien Pham Van1ㆍWon-Ju Lee1ㆍJi-Woong Lee1ㆍJi-Ho Ryu2

Kang-Ki Lee1ㆍKwang-Ho Son1ㆍJae-Hyuk Choi*1 Korea Maritime & Ocean University 2 Gyeongsang National University* Korea Maritime & Ocean University

A study on optimization of eco-friendly refrigerant for LNG cold energy recovery: Refrigerated cargo carriers with LNG fueled system

Seung-Hun Lee1ㆍHyun-Yong Lee2ㆍHo-Keun Kang*

1 Korea Maritime & Ocean University 2 R&D Division, Korea Register* Korea Maritime & Ocean University

High Expansion Cycle of Marine 2-stroke Engine

Ji-Woong Lee1ㆍHyun-Min Baek2ㆍKi-young Han3ㆍWon-Ju Lee*

1 Korea Maritime & Ocean University 2 R.O.K Navy Headquarters3 Korea Institute of Maritime and Fisheries Technology * Korea Maritime & Ocean University

The Uneven Pool Spread of Cryogenic Liquids

Kyungyul Chung1ㆍSunghoon Cho1ㆍLe-Duy Nguyen2ㆍMyungbae Kim*

1 Korea Institute of Machinery & materials 2 University of Science and Technology

*Korea Institute of Machinery & materials

Marine hybridization - Hybrid propulsion & battery energy storage with AC drives power conversion technology

Martti Alatalo 1

1 Danfoss

GS01-01

15:30~15:45

GS02-01

15:30~16:10

GS01-02

15:45~16:00

GS01-03

16:00~16:15

GS01-04

16:15~16:30

Room 121+122 | 15:30~16:30

| Day 1 | General Session

GS02Electric Propulsion System

Chairs : Tomohisa Dan (Kobe University, Japan)Kang-Woo Chun (Korean Register of Shipping, Korea)

Room 123 | 15:30~16:10

GS01Future Engine Technology and Marine Fuels (LNG, H2)

Chairs : Tran Hong Ha (Vietnam Maritime University, Vietnam)Myungbae Kim (Korea Institute of Machinery & Materials (KIMM), Korea)



Measurement and Application of High Voltage Power Line Communication Bandwidth in Electric Vehicles

Jaehwan Jeong1ㆍSeongho Yeung1ㆍKyungrak Sohn*

1 Korea Maritime & Ocean University * Korea Maritime & Ocean University

Fire detection system with power line communication and object detection

Seung-Ho Yang1ㆍJae-Hwan Jeong1ㆍKyung-Rak Sohn*


A Study on Speed and Orientation Estimation Algorithm of Welding Torch using High-pass Filter

Won-Yeol Kim1ㆍYang-Ick Joo1ㆍDong-Hoan Seo*


Rules and Regulations of Fuel cells-Battery Hybrid Electric Propulsion System

Seongwan Kim1ㆍHyeonmin Jeon1ㆍKido Park1ㆍJongsu Kim*


Visualization of Flow Field in Electrically Assisted Combustion

Won-Ju Lee1ㆍJae-Hyuk Choi1ㆍJongsu Kim1ㆍSung Hwan Yoon* 1 Korea Maritime & Ocean University * Korea Maritime & Ocean University

GS03-01

16:40~16:55

GS03-02

16:55~17:10

GS03-03

17:10~17:25

GS03-04

17:25~17:40

GS03-05

17:40~17:55

GS03

Electric, Electronic and Automation

Chairs : Trika Pitana (Institut Teknologi Sepuluh Nopember (ITS), Indonesia)Young-Chan Lee (Korea Maritime & Ocean University, Korea)

Room 121+122 | 16:40~17:55

ISMT 2019 48


Kodai Nakano1ㆍWataru Miyazaki1ㆍIchiro Asano1 ㆍTomohisa Dan*

1 Kobe University * Kobe University


Kenta Kuwaoka1ㆍYu Mihara1ㆍKousuke Sugiura1ㆍIchiro Asano1

Tomohisa Dan*



Kento Yokoi1ㆍTaiga Nakamura1ㆍRyoichi Ota1ㆍIchiro Asano1

Tomohisa Dan*


Ballast water compliance monitoring: A new application for ATP

Carine magdo1

1 Luminultra Technologies


Nueng-gyun Ahn1ㆍGeon-myeon Bak1ㆍJeong-Gil Nam2ㆍTae-woo Lee*

1 R&D center, Heesung Catalysts corp 2 Mokpo National Maritime University* R&D center, Heesung Catalysts corp

GS04-01

16:40~16:55

GS04-02

16:55~17:10

GS04-03

17:10~17:25

GS04-04

17:25~17:40

GS04-05

17:40~17:55

GS04Marine Fuel and Combustion

Chairs : Manh-Vu Tran (Monash University, Malaysia)Jiwoong Lee (Korea Maritime & Ocean University, Korea)

Room 123 | 16:40~17:55




Chien Pham Van1ㆍWon-Ju Lee1ㆍJi-Woong Lee1ㆍJi-Ho Ryu2

ㆍKang-Ki Lee1ㆍKwang-Ho Son1ㆍJae-Hyuk Choi*

1 Korea Maritime & Ocean University2 Gyeongsang National University

* Korea Maritime & Ocean University

The use of a mixture of natural gas and hydrogen as fuel is one of the effective solutions for reducing

marine emissions to meet IMO’s emission standards without any NOx after-treatment devices. This

paper presents a research on the combustion process of a ME-GI engine that uses hydrogen and

methane as fuel. In this study, a three-dimensional simulation model to calculate the combustion

inside the engine cylinder has been used in order to analyze the temperature field and emission

characteristics. The simulation results show that the exhaust gas emissions without affecting the

engine power can effectively be reduced by using the correct amount of H2 in the (H2 + CH4) mixture.

| Keywords | ME-GI Engine, Emission, Liquefied Natural Gas (LNG), Hydrogen

Numerical Study on the Combustion Process of ME-GI Engines Using Hydrogen and

Methane Mixture as Fuel

GS01-01

| General Session 1 | Day 1 (Thu) 15:30~15:45 / Room 121+122

ISMT 2019 50

Seung-Hun Lee1ㆍHyun-Yong Lee2ㆍHo-Keun Kang*

1 Korea Maritime & Ocean University2 R&D Division, Korea Register


A study on optimization of eco-friendly refrigerant for LNG cold energy recovery: Refrigerated cargo carriers

with LNG fueled system

GS01-02


Since the cold energy generated in the process of vaporizing LNG from a refrigerated cargo ship

using LNG as a fuel can make serious ecosystem disturbance of the ocean when it is thrown into the

sea so that is necessary to take a treatment method. To utilize this LNG cold energy, refrigerant for

high efficiency must be selected as the working fluid, the refrigerant should be considered with eco-

friendly, fire and chemical safety. In this study, Wartsila's DF engine (9L20DF) was used as main

engine and a new refrigeration system was combined with LNG fueled system to recover LNG cold

heat. Four refrigerants (R170, R1150, R134a, R32), which are widely used as eco-friendly refrigerants,

were selected for refrigeration system and the basic reverse Carnot cycle was applied to the operation.

Since LNG cold energy was used as condensing energy, refrigeration efficiency, exergy, and energy

capacity were measured and compared according to the condensation temperature variation (-50℃

~0℃). The maximum efficiency and mass flow of each refrigerant were calculated at the maximum

LNG evaporation temperature (-85℃, 7bar) which can meet the condition of Methane Number 80. As

a result of the simulation, COP and exergy efficiency increased as decreasing condensing temperature.

R134a had the highest value in COP and Exergy efficiency but, in Energy per mass flow, R170 had the

highest value. Moreover, R134a made highest maximum power at the maximum LNG evaporation

temperature but the mass flow of R134a was highest among them also.

| Keywords | LNG Fueled Ship, Cold Energy, Ecofriendly, Refrigerant, Condensing Temperature



Ji-Woong Lee1ㆍ Hyun-Min Baek2ㆍ Ki-young Han3 ㆍ Won-Ju Lee*

1 Korea Maritime & Ocean University2 R.O.K Navy Headquarters

3 Korea Institute of Maritime and Fisheries Technology* Korea Maritime & Ocean University

To improve the efficiency of the diesel cycle, the Atkinson cycle and the Miller cycle are cycles that

increase the expansion ratio rather than the compression ratio. The Atkinson cycle is increased the

expansion work by structural mechanism, while the Miller cycle controls the timing of compression

to increase the expansion ratio. In the uniflow scavenging marine two-stroke engine, the effective

compression ratio and expansion ratio are determined by the closing and opening timings of the

exhaust valves, and the closing timing of the exhaust valves is determined by avoiding the timing of

the scavenging exchange. This study proposes a variable scavenging port that can adjust the height

of the scavenging port and examines the high expansion effect that can be obtained by controlling the

height of the scavenging port at high load with a large amount of exhaust gas energy blowing into the

T/C.

As a result of delaying the opening timing of the exhaust valve from the end of the expansion stroke of

the model engine, the higher the efficiency of the T/C, the greater the effect of the expansion work due

to high expansion and the fuel consumption reduction rate of 1.6 g/kW·h is confirmed.

| Keywords | High expansion cycle, Atkinson cycle, Miller cycle, Marine 2-stroke engine

High Expansion Cycle of Marine 2-stroke Engine

GS01-03


ISMT 2019 52

Kyungyul Chung1ㆍSunghoon Cho1ㆍLe-Duy Nguyen2ㆍMyungbae Kim*

1 Korea Institute of Machinery & materials2 University of Science and Technology

* Korea Institute of Machinery & materials

The study of spread of cryogenic liquids is an essential procedure for assessing the risk of using

cryogenic liquids. There are various numerical models for describing the spread of a liquid pool formed

by leakage of a cryogenic liquid. Some models, such as the constant Froude number model and the

shallow layer model, require the vaporization velocity as the input variable. The vaporization velocity

should be determined experimentally because the heat transfer mechanism between the liquid pool

and the surrounding is very complicated and difficult to model. In this study, liquid nitrogen and liquid

oxygen were continuously discharged onto a 3 m diameter unbounded concrete plate to measure

the vaporization velocity when the liquid pool was spreading. Since the concrete plate is heavy, it is

impossible to simultaneously measure the radius of the pool using the thermocouple and the mass

of the pool using the electronic scale. So only the spread radius of the pool was measured. Therefore,

the vaporization velocity was evaluated based on the semi-analytical model using pool spread

data. Various release rates were obtained using several nozzles, and the effect of the rates on the

vaporization velocity was investigated

| Keywords | Cryogenic liquid, Spreading, Vaporization velocity, Liquid pool

The Uneven Pool Spread of Cryogenic Liquids

GS01-04




Martti Tuomas Alatalo 1

1 Danfoss

Danfoss Drives, AC-drives for Marine industry.

- One of the major producers, globally #2, with long term Low Voltage drives focus for the Marine industry.

For the Hybridization, AC-drives are in key role.

- Energy flow in electric form is common in modern hybridization, placing demand for the AC-drives.

Hybrid Propulsion with Electric Energy Storage System.

- Optimization to deliver efficiency, fuel economy, reduced emissions, capex, opex, proven benefits.

Energy Storage System ESS, Battery.

-How to select battery properly for the vessel’s usage & optimization in selected topology.

Power conversion, AFE, uGrid and DCDC converter.

- Power conversions AC-DC, DC-AC, DCDC are today’s technology.

Safety Safety Safety

- Hybridization using large ESS on board, system level safety is mandatory. Safety First.

Marine hybridization Hybrid propulsion & Battery energy storage with

AC drives power conversion technology

GS02-01

| General Session 2 | Day 1 (Thu) 15:30~16:10 / Room 123

ISMT 2019 54

Jaehwan Jeong1ㆍSeongho Yeung1ㆍKyungrak Sohn*

1 Korea Maritime & Ocean University* Korea Maritime & Ocean University

Measurement and Application of High Voltage Power Line Communication Bandwidth

in Electric Vehicles

GS03-01


Toyota conducted channel analysis and impedance measurements using high-voltage power lines used between batteries and power dividers in electric vehicles. In this paper, channel analysis and communication bandwidth were measured using high voltage power line based on the experiment conducted by Toyota Corporation. Inductive power line communication is applied to measure the communication bandwidth. The couplers composed of ferrite were used for inductive power line communication. The primary coupler was placed on the power line between the power divider unit and the high voltage battery in the electric vehicle. Secondary couplers were located on the power line of the external charger, power converter (LDC) and inverter, respectively. First, channel analysis was performed using a network analyzer at each location. And at the same location, we measured communication bandwidth using Jperf program. Measurements were made for when the vehicle was turned on and off as a measurement condition. When comparing the measurement results, the measured channel insert loss shows similar results. However, we found that the communication bandwidth has a lower value when the vehicle is turned on. Next, we added a webcam to the powerline communication modem. It was confirmed that the real-time video transmission is possible smoothly from the power converter to the power divider unit. And we experimented with object recognition using Raspberry Pi. It recognizes objects located in front of the vehicle and transmits the result through the power line. Place the primary coupler on the power splitter and connect the Raspberry Pi. Recognize objects through Pi-camera. The recognition result was transferred to the secondary coupler connected to the power converter through the power line, and the result was confirmed on the PC. This confirms that the power line communication with the high voltage line of the electric vehicle has sufficient bandwidth. In addition, the application of deep learning to power line communication can be expected to bring a lot of advances in various fields.

| Keywords | Electric Vehicle, Power Line Communication, Ferrite Coupler, Raspberry Pi, Deep Learning



Seung-Ho Yang1ㆍJae-Hwan Jeong1ㆍKyung-Rak Sohn*


In this study, a fire detection system was built using inductive power line communication(PLC)

technology and deep learning object detection technology, Faster Regions with CNN(F-RCNN) and

Single Shot multibox Detecter(SSD). In mountainous areas where there are few people, large-scale

fires can be prevented if early action is taken quickly when a fire breaks out. For the detection of fire,

Raspberry Pi was equipped with a Pycamera and the data learned using TensorFlow was inserted.

When detecting a fire using object detection, F-RCNNM has a detection rate of 0.05 fps and SSD has

1.4 fps. The performance difference was about 30 times. The detected data is transmitted through a

technology in which data is communicated on a frequency signal through a power line called power

line communication. When a fire is detected on the Raspberry Pi, images are sent along the powerline

to the monitoring PC for viewing by the observer. When the observer confirms the fire, the image is

saved on the monitoring PC and the pie resumes detection. Such a system is expected to be applied to

object detection technology for forest fire monitoring in mountain areas where humans do not access

and danger zone entrance monitoring by using inductive power line communication technology in

transmission lines.

| Keywords | Deep learning, Object detection, Power line communication

Fire detection system with power line communication and object detection

GS03-02


ISMT 2019 56

Won-Yeol Kim1ㆍYang-Ick Joo1ㆍDong-Hoan Seo*


The welding monitoring system mainly measures the current or voltage of the welding to identify

the defect of the welding and discriminates the basis of the upper and lower values. However, the

heat input varies depending on the target position and speed of the torch, which can significantly

reduce the accuracy of the quality judgment. Therefore, in this paper, we propose a real-time attitude

and speed measurement technique by attaching IMU to welding torch. The high frequency filter

eliminates the cumulative error that occurs in the low frequency region due to the signal integration

of the acceleration sensor, and reduces the inherent error of the sensor by applying a moving average

filter. Experimental results show that the speed measurement accuracy of the proposed algorithm is

improved compared to the integral-based speed measurement.

| Keywords | Welding monitoring system, Heat input, IMU, High-pass filter

A Study on Speed and Orientation Estimation Algorithm of Welding Torch using High-pass Filter

GS03-03




Seongwan Kim1ㆍHyeonmin Jeon1ㆍKido Park1ㆍJongsu Kim*


The regulations of the international community on emissions from vessels are strengthened day by

day, and technologies for reducing them are being discussed. Those countermeasures are related with

power sources such as engine, shaft generator, battery, fuel cell, renewable energy, etc. Especially,

the fuel cells with battery hybrid system is one of main power source of electric propulsion system.

Thanks to its development, the fuel cell-battery hybrid electric propulsion system could be applied

from coastal vessel to large electric propulsion vessel. To maintain seaworthiness in this system,

redundancy of system and high level of safety are crucial. To achieve this target the rules and

regulations of them should be prepared. The IEC, International Electro technical Commission, standard

and guidelines of class societies of electric propulsion system are being published. In this research, we

want to examine and compare international standards and domestic guidelines for fuel cell-battery

hybrid electric propulsion system. For end users and designer, it should be clearly developed and

described precisely. And finally we would love to propose improvements on the international standards

and guideline.

| Keywords | Fuel Cell-Battery Hybrid Electric Propulsion System, IEC Standard, Class Guideline

Rules and Regulations of Fuel cells-Battery Hybrid Electric Propulsion System

GS03-04


ISMT 2019 58

Won-Ju Lee1 ㆍ Jae-Hyuk Choi1 ㆍ Jongsu Kim1ㆍ Sung Hwan Yoon*


Bi-directional ionic wind is a key role of dynamic flame behavior under sub-breakdown field. The

other effects such as thermal and electrical-chemical effects can be ignored in the low-voltage regime.

Therefore, the modification of flow field by ionic wind in premixed combustion system is the dominant

mechanism on dynamic flame behavior. Basically, hydrocarbon flames have positive and negative

charges in the reaction zone, and the charged particles move to the both electrodes by Lorentz force.

The momentum from the movement process of the charged particles can transfer to the neutral

molecules due to molecular collision between the ions and the neutral molecules, which causes bi-

directional ionic wind. Therefore, in the present study, a qualitative estimation of the generation

mechanism of ionic wind would be discussed based on the visualization of flow field in electrically

assisted combustion.

| Keywords | Bunsen flame, Electric field, Electrically assisted combustion, Ionic wind, Particle image velocimetry

Visualization of Flow Field in Electrically Assisted Combustion

GS03-05




Kodai Nakano1ㆍWataru Miyazaki1ㆍIchiro Asano1 ㆍTomohisa Dan*

1 Kobe University* Kobe University

In present day, an ethanol-blended gasoline, so called bio-gasoline, is attracting attention as an alternative fuel for heat engines. Usage of biofuels is effective countermeasure for the emission problem of fossil fuels’ combustion and environmental problems such as global warming and air pollution. Therefore, in North America and South America, mixed gasoline of high alcohol concentration is being sold commercially. In this study, the usage of bio-gasoline is tried to apply for an outboard engine that is used as power sources of small vessels and leisure boats. The outboard engine consists of a small-sized internal combustion engine, a driving shaft, gears and a screw propeller. It generally emits the exhaust emissions directly into water, therefore it can’t avoid the contamination of water environment. From the past studies about alcohol fuel combustion, it is reported that harmful aldehydes are emitted from the engines if the oxidation of the fuel is not sufficiently done. So, it is needed to clarify the impact of exhaust gases to the water environment.In this experimental study, the outboard engine was attached and installed in a larger water tank (W 1190 x L 3060 x H 1530 mm), containing about 4500 liters of water. The engine used in this study was 4 stroke 2 cylinders spark ignition engine (total displacement volume 0.35 liters, rated power 11.0 kW @ 5000 min-1). Four types of fuel, E0 (gasoline 100%), E3 (blended with 3 vol.% ethanol), and E6 (blended 6 vol.%), and E10 (blended 10 vol.%) were used. In the combustion characteristic test, we examined differences in combustibility depending on the fuel types. For the environmental assessment, it was carried out the evaluation of inhibition rate of algae. It was examined how much the algal growth was inhibited by the test solution diluted with the aldehyde standard solution. Furthermore, to evaluate the toxicity of exhaust gas, quantification of aldehyde in exhaust gas from the engine was also conducted.The results of this experiment are as follows. With the increase of the mixing rate of ethanol, CO2 emissions increased and CO emissions decreased. Therefore, bio-gasoline suggested the promotion of complete combustion. Since bioethanol is produced from biomass, carbon neutral can be applied. When the carbon content derived from ethanol in the fuel is removed, it turned out that CO2 emissions decrease. Results of algal growth inhibition test and aldehyde quantification test showed that there is almost no toxicity in the emissions. Therefore, the ethanol mixing to gasoline fuel seems to have contribution in combustion improvements

| Keywords | Outboard engine, Bio-gasoline, Ethanol, Algal, Aldehyde


GS04-01


ISMT 2019 60

Kenta Kuwaoka1ㆍYu Mihara1ㆍKousuke Sugiura1

Ichiro Asano1ㆍTomohisa Dan*


Diesel engines have problems to emit harmful matters for environment such as carbon dioxide (CO2),

particle matter (PM) and nitrogen oxide (NOx) emissions. Above all, it is important to reduce CO2

emission, which is regarded as greenhouse gas (GHG) from the viewpoint of global warming. The use

of fossil fuel means to release the carbon in the ground to the atmosphere, and the use of fossil fuels

leads to an increase in the amount of CO2 in the atmosphere. Therefore, CO2 emissions can be reduced

if fossil fuels are not used. Wood derived pyrolysis tar oil (WPO) has potential to replace conventional

fossil fuels, and various applications are being considered from the viewpoint of effective utilization

of resources and reduction of environmental burden. However, the characteristics of WPO are highly

viscous and flame retardant, it is difficult to use for combustion engines as a base fuel. Since dimethyl

ether (DME) which is a substance of gaseous state at normal temperature, does not generate PM at

the time of combustion, its application to a diesel engines as clean energy of the next generations is

being studied. Physical properties of WPO like high viscosity and flame retardance are similar to heavy

fuel oils. Also, according to the past research, heavy fuel oil mixed with DME promotes atomization of

fuel spray and reduces NOx and PM emissions. Since this result is considered to depend on physical

properties and fuel characteristics of DME, improvement of fuel and combustion characteristics of

WPO could also be expected. From these, in this experiment DME was mixed with WPO and the

blended fuels containing 30wt% DME was examined. The viscosity of the blended fuel was measured

to prepare an appropriate viscosity for application to the engine. Blending with DME was possible to

reduce the viscosity of WPO to levels suitable for use in conventional engines. Further investigation

will be carried out with a three-cylinder test engine in performance and emission of blended fuel.

| Keywords | Wood derived pyrolysis tar oil, Blends fuel, Diesel engine, Dimethyl ether


GS04-02




Kento Yokoi1ㆍTaiga Nakamura1ㆍRyoichi Ota1

Ichiro Asano1ㆍTomohisa Dan*


Recently, various regulations are being provided for the exhaust emissions from diesel engines.

Emulsion fuel, as a technology satisfying the regulations, has been researched and developed. It can

be produced by adding water and surfactants to fuel oil, and it is expected to improve combustion

characteristics and reduce NOx emissions. According to the past researches, combustion tests have

been reported using fuels with different amounts of water. However, it has not been reported in details

about the influence on the performances of the diesel engine due to the difference in the dispersion

water droplet size in the emulsion fuel. Therefore, in this study, the emulsion fuel was produced by

the membrane emulsification with the porous membrane. Engine combustion tests were conducted

with several kinds of fuels for different water droplet size distribution. It was tried to clarify that

effect of droplet diameter distribution in water emulsified Jatropha oil to diesel engine performance.

According to experimental results of the exhaust gas as the index of the incomplete combustion and

the engine performance, it was concluded that the fuel of 20 ㎛ or less in water droplets’ diameter was

an appropriate distribution within the setting range in this study. Considering the stable operation of

engine, it was concluded that the fuel of less than 10 ㎛ in water droplets’ diameter was appropriate in

this study. However, further challenges with smaller droplet diameter distribution would be carried out

to clarify the effect of distribution.

| Keywords | Emulsion fuel, Membrane emulsification, Droplet size distribution, Diesel engine


GS04-03


ISMT 2019 62

Carine magdo1

1 Luminultra Technologies

About 10 billion tons of ballast water per year are transferred across our oceans during ballast

operations. It has been estimated that more than 4,000 species are transported daily in ballast tanks

and that about 40 recent incidents of invasive species have been caused by these transfers.

With potential threats to our eco-systems, health, and natural resources, regulatory bodies across the

world are working to ensure ships have a working ballast water management system plan in place, for

discharging ballast water.

With the recent ratification of the Ballast Water Management Cenvention, there is a heightened

interest in determinating how compliance will be monitored. Because of the long time frame and the

high skilled requirements of the detailled analysis, Indicative method appears to be fundamental to

indicate potential non compliance without unduly delay a ship.

B-QUA kit is an effective new technology based on ATP second generation resulting from 6 years of

research and development . This rapid and portable microbiological analysis is the only one that gives

compliance limits according with the IMO convention for all the 3 fractions ( ≥50 µm ; 10 - 50 µm ;

bacteria ) in less than one hour.

LuminUltra has been working on a rapid, on-board ballast water testing solution for many years

and is dedicated to help the marine industry navigate this new testing requirement.The benefits are

many for all stakeholders like Shipowner, Shipyars, Laboratory, Port state control , Manufacturer….

B-QUA kit can be used to check the efficiency of the treatment system during commissioning, retrofits,

Port State Control and also to confirm the long time on-going operational efficiency of the Ballast

Water Management Systems in order to protect the marine Environment and manage the heath and

economic impacts.

| Keywords | Korea, Marine engineering, Journal, Ballast water, Compliance monitoring

Ballast water compliance monitoring : A new application for ATP

GS04-04




Nueng-gyun Ahn1ㆍGeon-myeon Bak1ㆍJeong-Gil Nam2ㆍTae-woo Lee*

1 R&D center, Heesung Catalysts corp2 Mokpo National Maritime University* R&D center, Heesung Catalysts corp

In this study, four methods are proposed to reduce the volume of marine SCR catalyst. The four

methods are high density cell application, improvement of catalytic performance, reduction of

engineering margin through optimization of design value, and application of AOC. First, higher cell

density can have the same gas contact area with less volume. Second, it is possible to reduce the

amount of catalyst because improving the performance of SCR catalysts can show the same activity

with less volume. In addition, we developed WioW (Washcoat in & on wall) type catalyst from WiW

(Washcoat in wall) type catalyst, which combines the advantages of conventional coating type and

extruded type SCR catalyst. Third, we classified the causes of deactivation of SCR catalyst that can

occur in marine engines and discovered the effectiveness of each factor through experiments. These

results can be used to optimize the catalytic design, reducing the size of the reactor. Lastly, the

application of AOC can effectively remove NH3 slips even with a more compact SCR reactor.

| Keywords | SCR catalysts, Compact marine SCR, WiW type, AOC


GS04-05

| General Session 4 | Day 1 (Thu) 17:40~17:55/ Room 123

ISMT 2019 64

Numerical Analysis of Heat Transfer and Fluid Flow in Fin and Tube Heat Exchanger with Field Synergy Principle

Syaiful1ㆍCarisya Dara Salsabila1ㆍMyung-whan Bae*

1 Diponegoro University * Gyeongsang National University


Kwangho Son1ㆍJi Won Seok1ㆍWon-Ju Lee1ㆍ Sung Hwan Yoon*



Jun-Seong Kim1ㆍDo-Yeop Kim1ㆍYou-Taek Kim*



Ujjwal Shrestha1ㆍViet Luyen Vu1ㆍYoung Do Choi*

1 Mokpo National University * Mokpo National University

GS05-01

09:00~09:15

GS05-02

09:15~09:30

GS05-03

09:30~09:45

GS05-04

09:45~10:00


GS05Heat and Fluid Engineering

Chairs : Dong-Hoon Yoo (Class NK, Japan)Yong-Seok Choi (Korea Maritime & Ocean University, Korea)

Room 121+122 | 09:00~10:00


Hyoung-soo Yoo1ㆍSuk-yong Kang1ㆍ Beom-seok Rho*

1 Korea Institute of Maritime and Fisheries Technology* Korea Institute of Maritime and Fisheries Technology

GS06-01

09:00~09:15

GS06Marine Educations and Ship Rules

Chairs : Dong Khanh Le (Vietnam Maritime University, Vietnam)Beom-Seok Rho (Korea Institute of Maritime and Fisheries Technoligy (KIMFT), Korea)

Room 123 | 09:00~09:45



Visualization of Big Data Analysis Result for Selection of Suitable Location for Floating Ocean Wind Power Facility: Focusing on Historical Weather Data

Jun-Ho Huh1ㆍSang-Hyang Lee1ㆍJin-Hong Lim1ㆍJae-Hwan Kim*



SooJong, Mo1ㆍSobia Rind1ㆍYungHo, YU*

1 Marine Electronics Industry Promotion Association (MEIPA)* Marine Electronics Industry Promotion Association (MEIPA)


Qianfeng Lin1ㆍJooyoung Son*



Byeol Kim1ㆍ Kwang-Il Hwang*


GS06-02

09:15~09:30

GS07-01

11:00~11:15

GS07-02

11:15~11:30

GS07-03

11:30~11:45


Khac-Khiem Nguyen1ㆍHong-Ha Tran1ㆍDang-Khanh Le2ㆍDang-Khanh Le*

1 Vietnam Maritime University 2 VMU college of Vietnam Maritime University* VMU college of Vietnam Maritime University

GS06-03

09:30~09:45

GS07Marine ICT and Maritime Safety

Chairs : Yung Ho Yu (Ocean and Ship ICT Convergence, Korea)Jongdoc Park (Oshima College, Japan)

Room 121+122 | 11:00~11:45

ISMT 2019 66


Junyeop Lee1ㆍCheolmin Ahn1ㆍJaehui Bang1ㆍMinhye Kang1

Yeeun Jeong1ㆍDosik Sim1ㆍEunkyung Lee*


Analysis of Corrosion Resistances of High Interstitial Stainless Steels for a New Drill Collar Material in NaCl and H2SO4

Cheolmin Ahn1ㆍ Eunkyung Lee*


Effect of sediment characteristics on the sediment erosion in Francis hydro turbine

Ujjwal Shrestha1ㆍYoung Do Choi*

1 Mokpo National University * Mokpo National University

GS08-01

11:00~11:15

GS08-02

11:15~11:30

GS08-03

11:30~11:45


GS08Marine Materials and Machinery

Chairs : Young-Do Choi (Mokpo National University, Korea)Eunkyung Lee (Korea Maritime & Ocean University, Korea)

Room 123 | 11:00~11:45



Syaiful1ㆍCarisya Dara Salsabila1ㆍMyung-whan Bae*

1 Diponegoro University* Gyeongsang National University

A heat transfer enhancement in fin and tube heat exchangers has been attracted by many researchers

in these days. The passive method using a vortex generator is effective in the increase of heat transfer

rate. The present study attempts to focus on the numerical analysis of improvements in heat transfer

on fin and tube heat exchanger using concave and convex delta winglet pairs vortex generators (CDWP

and CxDWP VGs) on the fin side. Vortex generators with one, three, four and seven pairs were mounted

on the fin side with 15– attack angle. The study results were found that CDWP VGs takes the highest

heat transfer rate at the same Reynolds number compared to CxDWP and DWP VGs, and baseline

(without VGs). However, this increase in heat transfer rate is accompanied by an increase in pressure

drop. This result is strengthened through the analysis of the field synergy principle (FSP) in which the

CDWP shows the smallest synergy angle in the wake of VGs.

| Keywords | Numerical analysis, Heat transfer, Pressure drop, Vortex generators, Synergy angle

Numerical Analysis of Heat Transfer and Fluid Flow in Fin and Tube Heat Exchanger with

Field Synergy Principle

GS05-01

| General Session 5 | Day 2 (Fri) 09:00~09:15 / Room 121+122

ISMT 2019 68

Kwangho Son1ㆍJi Won Seok1ㆍWon-Ju Lee1ㆍ Sung Hwan Yoon*



GS05-02


In this study, flame propagation velocities were experimentally measured under the acoustic field in a quarter-wavelength resonator with various hydrocarbon fuels. In order to measure flame propagation velocities, Constant volume combustion chamber (i.e., CVCC) and Bunsen burner have been generally used. Measuring method using CVCC, displacement flame velocities are the same with flame propagation velocities since unburned gas velocities become zero. Measuring method using Bunsen burner, displacement flame velocities are differences with real flame propagation velocities because of finite value of unburned gas velocities. Although flame propagation velocities may not be accurately measured in Bunsen burner, the experimental setup is extremely simple, a flow supply unit and single heat-resistant pipe. However, the results of such conventional measurements have an ineluctable error compared to the theoretically calculated values. Because the flame is exposed to hydrodynamic instability such as curvature effect and strain effect, it is naturally unstable and curved shape. In conventional measurements, hydrodynamic instability affects flame and introduces an ineluctable error during measuring process. Therefore, we suggested a novel method to measure the flame propagation velocities under acoustic field in quarter-wavelength resonator. If premixed flame propagates downward in acoustic field, the primary acoustic instability suppressed hydrodynamic instability and modified typical flame shape from curved to flat. In flat flame under acoustic field, the impact of hydrodynamic instability such as flow re-direction effect and strain effect along the flame surface can be significantly suppressed. Thus, flame propagation velocities are measured very accurately, and those values are close to the theoretically calculated values.Another issue with the above-mentioned experiment is that the variation of flow field under acoustic wave can be observed from PIV (Particle image velocimetry) measurement. This allows us to estimate the validation of the theoretical formula suggested by previous researcher from comparison between the flow velocities obtained by experiment and by analytical solution.

| Keywords | Acoustic instability, Flame propagation velocity, Primary acoustic instability, Visualization of acoustic field



Jun-Seong Kim1ㆍDo-Yeop Kim1ㆍYou-Taek Kim*


Many studies have been conducted on the power generation cycle using carbon dioxide in response

to the recently tightened emission gas regulations. Turbine is one of the factor that determines the

efficiency of the power generation cycle. In this study, fundamental design of a radial outflow turbine

for a supercritical carbon dioxide power generation cycle was performed. We developed a preliminary

design algorithm that uses target efficiency as an input variable. Computational fluid dynamics was

used to verify the preliminary design program. Then, optimization was performed to meet the design

goals of the turbine. As a result, target performance of the turbine was met through the preliminary

design and optimization.

| Keywords | Radial outflow turbine, Supercritical carbon dioxide power generation cycle,

Fundamental design, Preliminary design, Computational fluid dynamics


GS05-03


ISMT 2019 70

Ujjwal Shrestha1ㆍViet Luyen Vu1ㆍYoung Do Choi *

1 Mokpo National University* Mokpo National University

This study aims to design a new axial-pump model to improve the efficiency of an old pump model.

The new design considers key parameters such as velocity triangles, hub-to-tip ratio, and selection

of hydrofoil in the preliminary design. A computational fluid dynamics analysis was adopted to

investigate the performance of the pump models. The performance of the new design was compared

with that of the old pump model. The experimental results of both models matched well with the

numerical results. The efficiency of the new model reached 73.4%, which is 8.2% higher than the

efficiency of the old model at the design point by experimental measurement. The highest loss was

found in the impeller domain of both models under the design condition. Thus, the focus is on the

internal flow in the impeller domain of both models. Uniform static pressure and smooth streamline

distributions were revealed in the fluid passages of the new impeller model. In contrast, non-

uniform static pressure distributions were indicated in the blade passages of the old impeller model.

As a result, flow circulations were found in the vicinity of the impeller hub area, which caused large

hydraulic losses in the impeller and outlet domains of the old model.

| Keywords | Axial-flow pump model, Performance, Impeller design, Loss analysis, Computational fluid dynamics (CFD)


GS05-04




Hyoung-soo Yoo1ㆍSuk-yong Kang1ㆍ Beom-seok Rho*

1 Korea Institute of Maritime and Fisheries Technology* Korea Institute of Maritime and Fisheries Technology

With the advent of ships using gases or low-flashpoint fuel, the International Maritime Organization

has established new convention and code for the safe operation of such ships. Unlike the IGC Code,

which was applied to the liquefied gas tanker, the IGF Code for ships using liquefied gas as fuel

came into effect. In addition, the STCW convention and code were entered into force and mandate the

training, qualification and certificate for seafarers serving on board ships subject to IGF Code. The main

contents of the STCW Convention(V/3) and Code(A-V/3) are the subjects of education, contents of

education, conditions for issuance of certificate, and conditions for exemption. [1] In many countries

around the world, such as Europe, LNG fueled ships are already in operation, and training courses have

been made for crew. However, there is no corresponding ship in Korea, so there is no relevant training

course. Therefore, analysis conducted relevant International Conventions and Codes in order to identify

the requirement for the opening of training curriculum was through this study.

| Keywords | IMO, Convention, IGF code, IGC code, STCW, Model course, Training course


GS06-01

| General Session 6 | Day 2 (Fri) 09:00~09:15 / Room 123

ISMT 2019 72

Byeol Kim1ㆍ Kwang-Il Hwang*


SOLAS regulation II-2/17 (MSC/Circ. 1002) allows the use of performance-based fire engineering

design to demonstrate that design solutions not complying with some of the traditional prescriptive-

based regulations are as safe as an equivalent. However, in the field of fire simulation, which is a

large part of performance-based design, there is a lack of data to set a detailed design fire scenario.

Therefore, the importance of the fire scenario elements may vary depending on the user’s own

judgments. The purpose of this study is to establish weights on the fire scenario factors based on TF-

IDF. Prior to this, fire accident analysis was performed using a text-mining technique. It is text data

analysis method, which has been used in the last 10 years for the ship fire written verdict. As the

results at this research, fire scenario elements included ship types, ignition sources, initial fuels and

target location.

| Keywords | Ship Fire, Fire Scenario, Fire Simulation, Text Mining, TF-IDF(Term Frequency - Inverse Document Frequency)


GS06-02




Khac-Khiem Nguyen1ㆍHong-Ha Tran1

Dang-Khanh Le2ㆍDang-Khanh Le*

1 Vietnam Maritime University2 VMU college of Vietnam Maritime University* VMU college of Vietnam Maritime University

Ultra wideband impulse (UWB) radars are getting much attention for applications of a smart house

and smart city. One of the interesting applications of UWB radar is vital to sign measurement, which

is a contactless method. UWB radar measures respiration and heartbeat rate by the motion of thorax.

However, the motion of thorax caused by heartbeat is usually in low intensity and easy getting noise

and perturbed by a non-stationary signal. Thus, this paper proposes a correlation approach for

enhancement of signal-to-noise ratio (SNR) that helps to correctly extract heart rate. The SNR of the

heartbeat signal was improved about 16dB by using the correlation approach.

| Keywords | UWB radar, Vital sign, Remote sensing, Correlation


GS06-03


ISMT 2019 74

Jun-Ho Huh1ㆍSang-Hyang Lee1ㆍJin-Hong Lim1ㆍJae-Hwan Kim*


According to the operation report and the survey results, operating a wind power plant in a non-

residential area could be a win-win situation for the power company and the residents. Recently, the

floating wind power facilities came into focus as the current land-based wind generation systems have

been causing some health-related issues mostly due to their low-frequency noise as well as economic

or social problems. Finding an optimal location for the wind power plant is never an easy task and as

it can be observed in several foreign cases, the safety has to be considered first, followed by economic

or environmental issues. Such a plant should not be an obstacle for safe navigation of ships or to

emergency traffic situations including the emergency landing of an aircraft. Also, careful attention

should be given to nearby fishing ground and conditions when constructing a floating wind power

plant as they largely affect fishermen’s economy due to current changes. Thus, in this proceeding

thesis, the historical weather data collected analyzed for over thirty years is presented first and the

problems associated with seasonal changes in the fishing grounds, conditions, and shorelines will

be identified through simulations to find some viable solutions, which can be essential for finding the

most suitable places for the floating wind power facilities.

| Keywords | Visualization; Big Data Analysis; Selection of Suitable Location; Floating Ocean Wind Power Facility; Smart Grid.

Visualization of Big Data Analysis Result for Selection of Suitable Location for Floating Ocean Wind Power Facility:

Focusing on Historical Weather Data

GS07-01




SooJong Mo1ㆍSobia Rind1ㆍYungHo Yu*

1 Marine Electronics Industry Promotion Association (MEIPA)* Marine Electronics Industry Promotion Association (MEIPA)

Experts of Ship technology have their own definition of Smart Ship. Some of them say that smart

ship is autonomous ship, the others eco-ship with smart technology. What is solved urgently for

shipbuilders and shipping companies is coping with environmental regulation such as Nox tier III, CO2

Phase 2((EEDI, EEOI) and ballast water management etc. Shipbuilder and shipping company want to

solve these kinds of problems with smart technology, ICT, IoT, M2M, big data analysis and intelligent

technology etc. Most important things in Smart Ship is that worthful service can reduce maneuvering

expense and comply with IMO environmental requirements. One of necessary functionality of

Autonomous or smart ship is realtime fault detection and diagnosis of system or machinery. This

paper shows realtime fault detection and diagnosis can be done by proposed method with realtime

ship maneuvering data. This paper used ship’s maneuvering data from Engine Logbook.

| Keywords | Fault detection and diagnosis, Real time fault detecting, Ship’s engine logbook, Real ship’s data


GS07-02


ISMT 2019 76

Qianfeng Lin1ㆍJooyoung Son*


Indoor position technology identifies the real-time position of the crew in ships. It also calculates the

number of regional personnel distribution, and can find timely the location of accidents. It is, therefore,

important to improve the positioning accuracy. This paper considers the nearest beacon and reference

point to each position in ships as key positions to improve the accuracy. We look for three positions to

predict user position. Firstly, KNN algorithm is used to get the first position P1. Secondly, the nearest

reference point is the second position P2. Finally, the weighted position of beacons is the third position

P3. The centroid position of these three positions is calculated to get the predicted user position.

Experimental results show the accuracy has been improved best by 54% compared to the previous

schemes.

| Keywords | Indoor Position, Key Position, KNN, Crew Safety


GS07-03







HWS(High Wear Resistance Steel) is used widely as a tool steel with high hardness, wear resistance

and excellent weldability in directed energy deposition(DED) of additive manufacturing. To investigate

the effect of the heat treatment on mechanical property, HWS deposited by DED was quenched

at 1060℃ and tempered at 520℃ on the surface of SCM420. The microstructures of non-heat-

treated and heat-treated HWS were analyzed by SEM, EDS and hardness test. In hardness test, the

value of non-heat-treated and heat-treated deposited HWS was 718HV, 780HV, respectively. The

microstructure of non-heat treated HWS showed the columnar zone and equiaxed zone owing to the

repeated heating in DED process and the microstructure of heat-treated HWS had fine chromium-

rich carbides, which formed a columnar dendrite by heat treatment. It was considered that austenitic

structure was transformed into martensite because of insufficient diffusion of carbon with fast cooling

rate, dissolving carbons in the interstitial sites. The deposited HWS has relatively good mechanical

properties rather than non-heat treated HWS with the large amount of martensitic structure and fine

columnar dendrite with chromium-rich carbides.

| Keywords | Additive manufacturing, Heat treatment, Hardness, Microstructure


GS08-01


ISMT 2019 78

Cheolmin Ahn1ㆍEunkyung Lee*


The petroleum process has been conducted in sever conditions by increasing the consumption of

petroleum rapidly. To develop a new drill collar material in sour environments, High interstitial Fe-

Cr-Mn-C-N stainless steels, CN66 (0.28%C+0.38%N) and CN71 (0.27%C+0.44%N), were cast

under atmospheric pressure. With respect to corrosion properties, CN66 and CN71 were compared

with High-Mn stainless steel, P550, which is now used widely as a drill collar material. Through

the measurement of the corrosion resistance based on the chemical compositions, P550 might be

susceptible to deleterious corrosion more than CN66 and CN71. Contrary to what the predictive

measurement values suggested, CN71 exhibited a mean of 0.517 and 9.55 mpy for the corrosion rate

compared to 0.37 mpy and 5.86mpy for P550, after the immersion experiments in 3.5 wt% NaCl and

0.5M/L H2SO4, respectively. It’s because carbides caused the depletion of chromium and intergranular

corrosion. Moreover, the corrosion rates of CN66 and CN71 dramatically decreased by a mean of

~98.1% via heat treatment at 1050℃ and 1180℃.

| Keywords | High Interstitial Stainless Steel, Corrosion Resistance, Heat Treatment, Intermetallic Phase

Analysis of Corrosion Resistances of High Interstitial Stainless Steels for a New Drill Collar Material in

NaCl and H2SO4

GS08-02




Ujjwal Shrestha1ㆍYoung Do Choi*

1 Mokpo National University* Mokpo National University

Sediment erosion is the main problem for the hydropower situated in South Asia and South America.

Due to sediment erosion, hydropower in those areas cannot operate in their full potential. Sediment

erosion is a significant problem in turbomachinery and associated with degradation of turbine

performance. The sediment erosion removes the turbine material from its surface. It can cause fracture

of the turbine, which leads to an economic loss. In this paper, the sediment properties and its influence

on erosion have discussed. Sediment properties like shape, size, and concentration have a direct

influence on erosion. The numerical analysis was conducted to visualize the erosion in Francis hydro

turbine. The most vulnerable area for the sediment erosion in Francis hydro turbine has predicted. The

precise prediction of the sediment erosion in the turbine is the difficult task due to the synergetic effect

of sediment parameters (shape, size, concentration, hardness, velocity). The accurate and precise

indication of the sediment erosion required both experimental and computational analysis. In this

study, solid-fluid computational analysis has done to identify the susceptible area on runner blade

and influence of sediment parameters on erosion.

| Keywords | Francis Hydro Turbine, Sediment, Erosion Model, Sediment Erosion, Shape Factor

Effect of sediment characteristics on the sediment erosion in Francis hydro turbine

GS08-03


ISMT 2019 80

Poster Session

P 1 A new one-step synthesis method for generating nanocarbon-supported metal nanoparticle

Dae-Yeong Kim1ㆍHyeon-Su Yang1ㆍYoung-Chan Lee1ㆍ Jun Kang*


P 2 Titration Experiment for Discharging Scrubber Wash-water from Ships

Yong-Seok Choi1ㆍMyung-Hun Cha2ㆍMu-Kyeong Kang2

Jong-Lib Kim2ㆍTae-Woo Lim*

1 Korea Maritime & Ocean University 2 Korea Marine Equipment Research Institute* Korea Maritime & Ocean University

P 3 A study on double-stage system for LNG cold energy recovery in LNG fueled ship for refrigerated cargo

Seung-Hun Lee1ㆍ Jin-Uk Lee1 ㆍ Eun-Seok Jeong1 ㆍ You-Taek Kim1

Ho-Keun Kang*


P 4 Analysis of hydrogen BOG re-liquefaction system for liquefied hydrogen carrier fueled by LNG and H2 gas

Hyunyong Lee1ㆍInchul Jung1 ㆍ Gilltae Roh1ㆍSeunghun Lee2ㆍHokeun Kang*

1 Korea Register 2 Korea Maritime & Ocean University* Korea Maritime & Ocean University

P 5 Performance Evaluation of Character-Aware Multilingual Named Entity Recognition with Multi-Head Attention Mechanism

Min-Ah Cheon1ㆍChang-Hyun Kim2ㆍJae-Kyun Kim1 ㆍHo-Min Park1

Ho Yoon1 ㆍ Min-Seok Choi1 ㆍ Young Namgoong1ㆍJae-Hoon Kim*

1 Korea Maritime & Ocean University 2 Electronics and Telecommunications Research Institute* Korea Maritime & Ocean University

P 6 Evaluation of bilingual lexicon production efficiency by similarity measurement method

Ho-Min Park1ㆍMin-Ah Cheon1ㆍYoung Nam-Goong1ㆍHo Yoon1

Min-Seok Choi1ㆍJae-Kyun Kim1ㆍJae-Hoon Kim*




Poster Session

P 7 A Development of Agent-based Navigation Simulation System using SES/MB Framework and DEVS Formalism

Hun-Gyu Hwang1ㆍYun-Tae Woo1ㆍBae-Sung Kim2ㆍJang-Se Lee*

1 Research Institute of Medium & Small Shipbuilding 2 Research Institute of Medium & Small Shipbuilding * Korea Maritime & Ocean University

P 8 A Development of Shipboard Data Server for Remote Maintenance System based on ISO 19847

Hun-Gyu Hwang1ㆍYun-Tae Woo1ㆍJang-Se Lee2ㆍIl-Sik Shin*

1 Research Institute of Medium & Small Shipbuilding 2 Korea Maritime & Ocean University* Research Institute of Medium & Small Shipbuilding

P 9 Charge Trapping Behavior of Organic thin film at Interfacial Oxide Layer by Local Current Injection

Jiwon Han1ㆍYeongjong Kim2 ㆍJeonghyeon Yang*

1 Samsung Display 2 Korea Maritime & Ocean University * Gyeongsang National University

P 10 A System for Accelerated Aging Test of Surge Protective Devices

Nam-Hoon Kim1ㆍTae-Ho Kang1ㆍDong-Hyun An1 ㆍ Guoming Wang2 Gyung-Suk Kil*

1 Korea Maritime & Ocean University 2 Hangzhou Guozhou Power Technology Co., Ltd* Korea Maritime & Ocean University

P 11 Influence of Ambient Temperature on Online Monitoring for Metal Oxide Varistors

Tae-Ho Kang1ㆍ Nam-Hoon Kim1ㆍ Han-Sin Shin1ㆍ Guoming Wang2

Gyung-Suk Kil*

1 Korea Maritime & Ocean University 2 Hangzhou Guozhou Power Technology Co., Ltd* Korea Maritime & Ocean University

P 12 Possibility of Multi-functional Application Devices in Multiferroic 0.7BaTiO3-0.3Pr0.65Ca0.35MnO3 Core Shell

Jongdoc Park1ㆍTakashi Fujimoto2ㆍKazuhiro Kitamura3ㆍOsami Yanagisawa*

1 National Institute of Technology, Oshima College 2 National Institute of Technology, Yuge

College 3 Aichi University of Education * National Institute of Technology, Yuge College

ISMT 2019 82

Poster Session

P 13 A Study on the effect of energy efficiency on the application of the propulsion system and operation mode of ships

Hunseok Lee1ㆍMinwook Kim1ㆍJonghak Lee1ㆍJin-Seok Oh*


P 14 A Study on the Utilization of Conductive Material for Lithium ion battery Using Waste Soot

Dae-Yeong Kim1ㆍHyeon-Su Yang1ㆍWon-Ju Lee1ㆍYoung-Chan Lee1ㆍJun Kang*


P 15 Recycling Petroleum Coke Soot as an Anode Active Material of Lithium Ion Battery

Kwang-Ho Son1ㆍJun Kang1ㆍJae-Hyuk Choi1ㆍDae-Young Kim1 Ji-Woong Lee1ㆍJun-Soo Kim2ㆍSung Hwan Yoon1ㆍWon-Ju Lee*

1 Korea Maritime & Ocean University 2 Korea Institute of Maritime and Fisheries Technology* Korea Maritime & Ocean University

P 16 The Effect of Microstructure on the Mechanical Property of Hard-faced SCM420 Tool Steel

Minhye Kang1ㆍCheolmin Ahn1ㆍJaehui Bang1ㆍJunyeop Lee1



P 17 Analysis of the Intermetallic Phase on the Effect of Local Surface Reinforcement in SCM420

Jaehui Bang1ㆍCheolmin Ahn1ㆍJunyeop Lee1ㆍMinhye Kang1ㆍ Yeeun Jeong1ㆍDosik Sim1ㆍEunkyung Lee*


P 18 Improvement of bonding strength on the interface of a disk brake produced by aluminum/cast-iron dissimilar casting

Gihoon Moon1ㆍCheolmin Ahn1ㆍWonho-Kim1ㆍSunghwan Park2

Eunkyung Lee*

1 Korea Maritime & Ocean University 2 Dong Eui University* Korea Maritime & Ocean University



Poster Session

P 19 Design of New Tandem Drawing Process to Manufacture High-Purity Stainless Steel Drawn Products for Mass Flow Controllers

Sung-Cheol Park1ㆍIm-Jeong Cheon2ㆍJae-Han Son2ㆍHyun Park2

Sung-Kyu Hong2ㆍKyung-Hun Lee*

1 Korea Maritime & Ocean University 2 RHINOX CO., LTD* Korea Maritime & Ocean University

P 20 Boiling CHFs on Platinum Cylinder in a Liquid FC-72

Katsuya Fukuda1ㆍQiusheng Liu2ㆍJongdoc Park*

1 Oshima College 2 Kobe University * Oshima College

P 21 Submarine Motions at Near Surface Depth under Irregular Ocean Waves

Mohammad Moonesun1

1 National University of Shipbuilding Admiral Makarov (NUOS)

P 22 CFD analysis on the optimization of submarine sailing shape

Mohammad Moonesun1, 2ㆍAlexander Ursolov2ㆍAsghar Mahdian1

1 Malek-Ashtar University of Technology2 National University of Shipbuilding Admiral Makarov (NUOS)

P 23 Laser Welding and Joining Technology for Lightweight Materials

Kwang-Deok Choi1ㆍInsung Choi1ㆍSangeon Park2ㆍJeong Suh1ㆍSu-Jin Lee*

1 Korea Institute of Machinery & Materials 2 Sungwoo Hitech* Korea Institute of Machinery & Materials

P 24 Arc discharge system in the seawater for the BWMS sterilization

Seong-Wan Kim1ㆍKidong Park1ㆍJun Kang1ㆍJongsoo Kim1

Myeonghoon Lee1ㆍYeonwon Kim1ㆍYongsup Yun*


P 25 Effect of Heat Treatment on Mechanical Property of HWS deposited by Directed Energy Deposition


Yeeun Jeong1ㆍDosik Shim1ㆍEunkyung Lee*

1Korea Maritime & Ocean University * Korea Maritime & Ocean University

ISMT 2019 84

Poster Session

P 26 A Study on Feedforward Control for Energy-Saving of Central Cooling System

Tae-Youl Jeon1ㆍYoung-Chan Lee1ㆍChang-Min Lee1ㆍJun Kang1

Byung-Gun Jung*


P 27 Effect of common-rail pressure and natural gas proportion on performance of dual fuel diesel engine

Myo Thant Zin1ㆍJi Won Yoon1ㆍDae Kwon Koh1ㆍJeong Min Cheon2ㆍSuk Ho Jung*

1 Pukyong National University 2 Korea Marine Equipment Research Institute* Pukyong National University

P 28 FEC Control Model of Hot Strip Finishing Mills

Sung-Cheol Park1ㆍ Jin-Gyu Han2ㆍ Kyung-Hun Lee*

1Korea Maritime & Ocean University 2 Hyundai Steel Company* Korea Maritime & Ocean University

P 29 Development of Unified Competence on Marine engineer English

Young-Chan Lee1ㆍJun Kang1ㆍTae Yul Jeon1ㆍByung-Gun Jung*


P 30 A Study on Initiative Structural Stability Evaluation for 500ton class Topside Module

Bo-Rim Ryu1ㆍSeung-Hun Lee2ㆍJin-Uk Lee2ㆍHo-Keun Kang*

1 BEST Co., Ltd. 2 Korea Maritime & Ocean University * Korea Maritime & Ocean University



Dae-Yeong Kim1ㆍHyeon-Su Yang1ㆍYoung-Chan Lee1ㆍ Jun Kang*


Metal nanoparticles supported on carbon nanoballs were synthesized by solution plasma process.

The results of structural characterizations show that the Au, Pt, Au-Pt bimetallic alloyed nanoparticles

were deposited on all of carbon nanoballs with high loading and dispersion. This method might be a

potential to be a method for a single-step production of nanocarbon-supported metal nanoparticle in

the future.

| Keywords | Nanoparticles, Carbon, Solution Plasma Process

A new one-step synthesis method for generating nanocarbon-supported metal nanoparticle

P1

| Poster Session | Day 1 (Thu) 13:10~17:55 / Lobby



ISMT 2019 86

Yong-Seok Choi1ㆍMyung-Hun Cha2ㆍMu-Kyeong Kang2

Jong-Lib Kim2ㆍTae-Woo Lim*

1 Korea Maritime & Ocean University 2 Korea Marine Equipment Research Institute


From January 1, 2020, it was decided to strengthen the sulfur content standards for ship fuels from

3.5% to 0.5% in global sea area outside the emission control areas(ECA). The scrubber makes it

possible to use existing marine fuel oil and to clean the exhaust gas. The open loop and hybrid type

scrubbers discharge the wash-water into the sea. To discharge wash-water, the pH value should be

at least a pH of 6.5 within a distance of 4 m from the discharge point. This should be approved using

tests or other equivalent scientifically proven methods, including numerical methods. In this study, the

titration experiment of wash-water and seawater was carried out to discharge scrubber wash-water

from ship. Titration results were compared with theoretical chemical equations, and the results were in

good agreement with theoretical titration curve. Therefore, it is reasonable to use theoretical titration

curve to calculate the nozzle diameter for discharging scrubber wash-water.

| Keywords | PH, Scrubber, Titration, Titration curve, Wash-water

Titration Experiment for Discharging Scrubber Wash-water from Ships

P2




Seung-Hun Lee1ㆍJin-Uk Lee1ㆍEun-Seok Jeong1ㆍYou-Taek Kim1

Ho-Keun Kang*


In the case of ships using liquefied natural gas (LNG) as fuel for ships, SOx and particulate matter (PM)

are hardly released compared to conventional HFO, and about 25% of CO2, NOx, It can be reduced by

about 85%, and it has been attracting attention as a next-generation clean fuel. In fact, as of April

2018, about 121 liquefied natural gas (LNG) fuels have been sailing in the sea and about 126 vessels

are under construction, which is increasing by 309% compared to 64 vessels in 2014. Most of the LNG

fueled ships are passenger ships, LNG carriers, and oil/chemical tankers but the application of LNG

fueled system for refrigerated cargo carrier was not studied. According to the Clarksons statistics, about

42% of the 799 refrigerated cargo ships in the world are old ships with more than 30 years of age so

the LNG fueled system for refrigerated cargo ships is a good solution to cope with the regulation. In

LNG fueled system, LNG should vapor from -163℃ to 45℃ for feeding to engine, cold energy of LNG

was generated during the vaporization and that was thrown to the sea. However, serious ecosystem

disturbance can occur by the cold energy. In this study, for LNG cold energy recovery, double-stage

system which applied indirect refrigeration and ORC power generation was combined to LNG fueled

system. In refrigeration stage, power requirement of the new system is compared with the existing

system. In ORC power generation stage, optimum refrigerant is selected by analyzing the performance

of the cycle according to the change of the condensation temperature, pressure and superheat degree.

| Keywords | LNG fueled ship, Cold energy, In-direct refrigeration, ORC

A study on double-stage system for LNG cold energy recovery in LNG

fueled ship for refrigerated cargo

P3


ISMT 2019 88

Hyunyong Lee1ㆍInchul Jung1ㆍ Gilltae Roh1ㆍSeunghun Lee2ㆍHokeun Kang*

1 Korea Register 2 Korea Maritime & Ocean University* Korea Maritime & Ocean University

Boil-off gas is an inevitability on board liquefied hydrogen carriers and must be effectively controlled

to avoid adverse effects on gas pressure in the cargo tanks. It can be used as fuel or re-liquefied or

burnt to regulate the cargo tank pressure. In this study, a boil-off gas re-liquefaction system optimized

for the l60,000 m3 liquefied hydrogen carrier was provided. The DFDE engine and fuel cells fueled by

LNG and hydrogen boil-off gas respectively were adopted as the propulsion system for the liquefied

hydrogen carrier, in order to achieve low fuel cost and flexibility against environment regulations.

The considered re-liquefaction system comprised of a hydrogen compression section and helium

refrigerant section with two Joule–Brayton cascade cycles. The cold energy of LNG and a fraction of

the hydrogen boil-off gas is recovered to reduce the power consumption of the helium and hydrogen

compressors. Exergy and energy analyses for the proposed re-liquefaction system were carried

out to evaluate the exergy efficiency, specific energy consumption and exergy destruction for each

components. Moreover, parametric studies were conducted with varying operating conditions, such

as the boil-off gas temperature, the compression pressure of hydrogen, the hydrogen expander inlet

temperature and the compression pressure of helium.

| Keywords | Hydrogen, Boil-off gas (BOG), LNG, Re-liquefaction

Analysis of hydrogen BOG re-liquefaction system for liquefied hydrogen carrier fueled by LNG and H2 gas

P4




Min-Ah Cheon1ㆍChang-Hyun Kim2ㆍJae-Kyun Kim 1ㆍHo-Min Park 1

Ho Yoon 1ㆍMin-Seok Choi 1ㆍYoung Namgoong 1ㆍJae-Hoon Kim*

1 Korea Maritime & Ocean University2 Electronics and Telecommunications Research Institute


Named entity recognition (NER) is the task of finding and classifying named entities (NEs) such as a

person, location, or organization from a text. Recent NER research focuses on deep learning techniques

that combine Bi-RNNs for considering the left to right context and right to left context of input

sentences and CRFs using the transition probability between output data. Most research, however,

uses input units like words or morphemes. In addition, various resources such as word/morpheme

tokenizers, NE dictionaries, and parts-of-speech distributions are needed to improve performance.

In this paper, we proposed a character-aware multilingual NER using Bi-GRU/CRFs with multi-head

attention. As a result of applying the proposed method to Korean, Japanese, Chinese, and English texts

, Korean and Japanese showed excellent performance (F1 84.84% and F1 89.56%, respectively), while

English showed very good performance (F1 80.83%) and Chinese showed the poorest performance (F1

21.05%).

| Keywords | Multi-head attention mechanism, Information extraction, Named entity recognition, Nautical terms recognition

Performance Evaluation of Character-Aware Multilingual Named Entity Recognition with Multi-Head Attention

Mechanism

P5


ISMT 2019 90

Ho-Min Park1ㆍMin-Ah Cheon1ㆍYoung Nam-Goong1ㆍHo Yoon1

Min-Seok Choi1ㆍJae-Kyun Kim1ㆍJae-Hoon Kim*


Bilingual lexicon is set of target word pairs that have the same or nearly equivalent meaning between

the two languages used. Such bilingual lexicon is often used when processing multiple languages

simultaneously in the field of natural language processing such as machine translation and sentiment

propagation. Once produced, the accuracy of a bilingual lexicon has a significant impact on the

accuracy of the entire system, since it is used as the answer on the system. Therefore, in this paper, we

conducted bilingual lexicon fabrication experiment using Korean-English parallel corpus to evaluate

the effectiveness of various similarity measurement methods used to extract target word pairs. A

bilingual lexicon was produced by calculating Point-wise Mutual Information using co-occurrence

matrix and fastText or measuring cosine similarity, and comparing the accuracy, production time, and

resource of the extracted target word pairs. We confirmed that target word pair extraction through PMI

values in the co-occurrence matrix is the most efficient.

| Keywords | Bilingual lexicon, Co-occurrence matrix, FastText, PMI, Cosine similarity

Evaluation of bilingual lexicon production efficiency by similarity measurement method

P6




Hun-Gyu Hwang1ㆍYun-Tae Woo1ㆍBae-Sung Kim2ㆍJang-Se Lee*

1 Research Institute of Medium & Small Shipbuilding 2 Research Institute of Medium & Small Shipbuilding


Recently, various systems have been developed to support ship navigation safety. In order to verify the

usefulness of such a system, it is most ideal to try it on a real vessel, but there are many difficulties. As

an alternative, usability verification methods applied with modelling and simulation (M&S) techniques

are required such as FMSS, which is closest to reality, is very expansive to construct, and there needs

the specialized operator. For this reason, this paper proposes a method to verify the navigation

safety support system by modeling and simulation techniques based on the Discrete Event System

Specification (DEVS) formalism.

| Keywords | Computer-based navigation simulation, DEVS formalism and SES/MB framework, COLREGs

A Development of Agent-based Navigation Simulation System using SES/MB Framework and DEVS Formalism

P7


ISMT 2019 92

Hun-Gyu Hwang1ㆍYun-Tae Woo1ㆍJang-Se Lee2ㆍIl-Sik Shin*

1 Research Institute of Medium & Small Shipbuilding 2 Korea Maritime & Ocean University

* Research Institute of Medium & Small Shipbuilding

Recently, various researches are progressing to support the operation and maintenance works that

apply the analyzed result from devices and equipment in vessels. The interfaces for communication

and navigation systems are standardized already, but the interfaces for equipment in machinery

and other parts are not standardized. For that reason, there has limitations for data exchange and

management. To solve the problem, the ISO 19847 is published for shipboard data servers to share

field data at sea. In this paper, we developed a data management platform for gathered data from

shipboard machinery equipment, and tested the field data exchanging using the developed platform

based on the standards. To do this, we analyzed the requirements of the standards and related

researches, and designed an architecture of shipboard data platform that satisfied the requirements.

Also, we developed components of the designed platform architecture and verified the effectiveness

for it.

| Keywords | Shipboard data server, Integrated data management platform, Machinery equipment of vessel, ISO 19847

A Development of Shipboard Data Server for Remote Maintenance System based on ISO 19847

P8




Jiwon Han1ㆍYeongjong Kim2ㆍJeonghyeon Yang *

1 Samsung Display 2 Korea Maritime & Ocean University

* Gyeongsang National University

Charge trapping behavior of silicon (Si) substrates covered with a self-assembled monolayer (SAM)

was studied using on a local biasing method with a conductive-probe atomic force microscopy. A

hexadecyl SAM (HD-SAM) on a Si substrate, in which the molecules were covalently bonded to the

Si substrate, was found to have no charge trapping sites at its monolayer/Si interface, while an

ocatadecylsilyl SAM (ODS-SAM) on a Si substrate, in which an thin oxide layer was inserted between

the molecules and the Si substrate, showed a distinct charge trapping behavior. The alkyl monolayer

directly fixed on Si is promising as a very thin insulating layer in Si microelectronics.

| Keywords | Self-assembled monolayer, Kelvin-probe force microscopy, Scanning capacitance microscopy

Charge Trapping Behavior of Organic thin film at Interfacial Oxide Layer by Local Current Injection

P9


ISMT 2019 94

Nam-Hoon Kim1ㆍTae-Ho Kang1ㆍDong-Hyun An1

Guoming Wang2ㆍGyung-Suk Kil*

1 Korea Maritime & Ocean University2 Hangzhou Guozhou Power Technology Co., Ltd


Surge protective devices are widely used to protect electronic equipment on ship board from

transient overvoltage. It is necessary to investigate their deterioration characteristics to ensure the

reliable operation and to predict the residual lifetime. In this paper we designed and fabrication the

system for accelerated aging test of surge protective devices, which is aimed to generate the 8/20

µs impulse current up to 20kA. This system was developed according to IEC 61000-4-5 and was

mainly composed of a combination wave generator, a coupling network, and a decoupling network.

This system was fully controlled by LabVIEW program with a data acquisition unit. From the result, the

proposed system was verified to generate 8/20µs impulse current in the de-energized and energized

test.

| Keywords | Surge protective devices, Accelerated aging test, 8/20μs impulse current, Coupling/decoupling device

A System for Accelerated Aging Test of Surge Protective Devices

P10




Tae-Ho Kang1ㆍ Nam-Hoon Kim1ㆍ Han-Sin Shin1

Guoming Wang2ㆍ Gyung-Suk Kil*

1 Korea Maritime & Ocean University2 Hangzhou Guozhou Power Technology Co., Ltd


Metal-oxide varistors (MOV), which are installed to protect electronic devices from transient

overvoltages, deteriorate gradually owing to repetitive protection operations and environmental

stresses. Online diagnosis of MOV is carried out by monitoring the total leakage current and its third

harmonic component, however, values of these parameters are influenced by ambient temperature.

With this background, this paper studied the influence of ambient temperature on online condition

monitoring of MOV for improving the diagnosis reliability. An accelerated aging test of MOV was

conducted and the changes of leakage current with ambient temperature were investigated.

| Keywords | Metal-oxide varistors, Ambient temperature, Online monitoring, Leakage current, Reliability

Influence of Ambient Temperature on Online Monitoring for Metal Oxide Varistors

P11


ISMT 2019 96

Jongdoc Park1ㆍTakashi Fujimoto2ㆍKazuhiro Kitamura3ㆍOsami Yanagisawa*

1 National Institute of Technology, Oshima College 2 National Institute of Technology, Yuge College 3 Aichi University of Education

* National Institute of Technology, Yuge College

In recent years, automatic ship handing operation for solution of shorthanded and safe operation in

navigation section and optimal control of engine for clean exhaust gas for solution of environmental

protection in engine section are hot topic in research for maritime technology development. Sensor

and actuator are fundamental key technology for those technology developments as important

interface between real world and central processing unit or artificial intelligence. The multi-

functional application devices with new physical property control by external fields are developed.

The multiferroic caused by the coupling between ferroelectric, ferromagnetic, ferroelastic and etc is

one of candidate. 0.7BaTiO3-0.3Pr0.65Ca0.35MnO3 core shells were prepared to approach to the

multiferroic between ferroelectric, BaTiO3 and the photo-induced effect, Pr0.65Ca0.35MnO3 mediated

with strain. Electric behaviors in 0.7BaTiO3-0.3Pr0.65Ca0.35MnO3 under external magnetic field

were studied comparatively with 0.7BaTiO3-0.3NiFe2O4. Temperature dependence of the normalized

voltage in 0.7BaTiO3-0.3Pr0.65Ca0.35MnO3 with the magnetic field show a decrease below 170K

and increase above 170 K. Temperature dependence of the dielectric constant with the magnetic

field show a dramatic increase at low temperature. These behaviors are reversible without and with

the magnetic field. These behaviors in BaTiO3, NiFe2O4 and Pr0.65Ca0.35MnO3 single phase show

different behaviors with the magnetic field. These behaviors in BaTiO3-0.3Pr0.65Ca0.35MnO3 may

be attributed to the multiferroic between piezoelectricity and the photo-induced effect through strain

which is similar kind of mechanism in 0.7BaTiO3-0.3NiFe2O4. In this case the photo-induced effect

which is transition from the CO insulator state associated with AF spin order to the CD state associated

F spin order by laser light, is caused by the magnetic field.

| Keywords | Multiferroic, Photo-induced effect, Colossal negative magneto resistance, Core shells, 0.7BaTiO3-0.3Pr0.65Ca0.35MnO3, Magnetic field

Possibility of Multi-functional Application Devices in Multiferroic 0.7BaTiO3-0.3Pr0.65Ca0.35MnO3 Core Shell

P12




Hunseok Lee1ㆍMinwook Kim1ㆍJonghak Lee 1ㆍJin-Seok Oh*


Demand for eco-friendly ships and smart ships is increasing due to rising fuel oil prices and

regulations on ship emissions such as sulfur oxides and nitrogen oxides. In addition, with the

recent development of electric power technology, research has been underway to equip ships with

equipment such as batteries and shaft generator motor. The development of such equipment,

regulation, and environmental changes make various vessel propulsion systems and operation modes

developed and applied. In this paper we compare and analyze the energy efficiency according to the

application of various propulsion systems to container vessel. In particular, the system configuration

and characteristics according to the motoring mode[power take off (PTO) mode] and generation

mode[power take off (PTO) mode] of the application of the shaft generator motor are analyzed. Further,

operation modes suitable for each type of propulsion system are also described.

| Keywords | Hybrid Electric Drive, Shaft Generator Motor, Propulsion System Fuel Consumption

A Study on the effect of energy efficiency on the application of the propulsion system

and operation mode of ships

P13


ISMT 2019 98

Dae-Yeong Kim1ㆍHyeon-Su Yang1ㆍWon-Ju Lee1

Young-Chan Lee1ㆍJun Kang*


In this study shows that the waste soot emitted from ship was utilized as conductive material for

lithium-ion battery. The waste soot’s morphology is exactly same with the morphology of carbon

black used for lithium-ion battery and in this study, crystallization was carried out by heat treatment at

2700 ℃ in order to utilize this waste soot as conductive material. As a result, the waste soot has been

transformed into a unique carbon black having low specific surface structure. This unique structure

plays a role in greatly improving the electrochemical performance as conductive material for lithium-

ion battery.

| Keywords | Waste soot, Lithium-ion battery, Conductive material

A Study on the Utilization of Conductive Material for Lithium ion battery Using Waste Soot

P14




Kwang-Ho Son1ㆍJun Kang1ㆍJae-Hyuk Choi1ㆍDae-Young Kim1

Ji-Woong Lee1ㆍJun-Soo Kim2ㆍSung Hwan Yoon1ㆍWon-Ju Lee*

1 Korea Maritime & Ocean University2 Korea Institute of Maritime and Fisheries Technology


In this study, the petroleum coke soot was recycled as an anode active material of lithium ion

battery. The soot was generated after combustion in a plant boiler using petroleum coke as a fuel.

We suggested a novel method about recycling the soot which is environmentally harmful. In this

experiment, we tried to anneal the soot at 2700℃ for graphitization so that the annealed soot has

shown highly crystalline graphite. Focusing on this soot structure, the lithium ion battery was produced

using graphitized soot and the performance was tested. In the electrochemical test, this battery has a

high discharge capacity and long-life cycle with a reversible capacity. Consequently, this study showed

a new possibility of recycling petroleum coke and verified the utilization value of the waste soot.

| Keywords | Petroleum coke, Anode active material, Lithium ion battery, Waste soot

Recycling Petroleum Coke Soot as an Anode Active Material of Lithium Ion Battery

P15


ISMT 2019 100

Minhye Kang1ㆍ Cheolmin Ahn1 ㆍ Jaehui Bang1 ㆍ Junyeop Lee 1



Cr-Mo steel SCM420 has required hard-facing to obtain good mechanical properties as structural

carbon steel. To understand the mechanical property on hard-facing methods, carburized-SCM420

and HWS deposited by DED additive manufacturing were analyzed. In the hardness test, the value

of deposited HWS was relatively high, a mean of 717HV, and the value of carburized-SCM420

was comparatively low, a mean of 400HV. To investigate the microstructures which can affect the

mechanical properties of the materials, the microstructures of carburized-SCM420 and deposited

HWS were observed by SEM and EDS. The martensitic structures, which have a high hardness, and

tempered-martensitic structures were confirmed in the carburized-SCM420. As the fractions of

retained-austenite increased with the depth of the SCM420, the hardness of carburized-SCM420

decreased by reduction of martensitic structures. The martensite in deposited HWS was also revealed

as with carburized-SCM420, and fine structures were exhibited in deposited HWS due to the high

cooling rate during solidification. It was considered the fine grain size was revealed on the deposited

HWS compared to SCM420. The microstructure characteristic of deposited HWS would lead to high

hardness rather than carburized-SCM420.

| Keywords | Microstructure, Hardfacing, Directed energy deposition (DED), Carburizing, Tool steel

The Effect of Microstructure on the Mechanical Property of Hard-faced SCM420 Tool Steel

P16




Jaehui Bang1ㆍCheolmin Ahn1ㆍ Junyeop Lee1 ㆍ Minhye Kang1



SCM420, structural carbon steel, has been used as tool steel with its good weldability and high

hardenability, and requires local surface reinforcement for good mechanical property. In this study

based on SCM420, High Wear Resistance Steel (HWS) deposited by 3D printing DED, heat-treated

HWS by quenching at 1060℃ and tempering at 520℃, and carburized SCM420 were compared to

analyze microstructures for superior mechanical property by using SEM and EPMA. Through the

analysis of microstructures by SEM, it was showed that the carburized-SCM420 contained retained-

austenite and the plate type of tempered-martensite. Non-heat treated HWS exhibited martensitic

structure, cellular and columnar dendrites structures with distribution of fine carbides uniformly.

Furthermore, heat-treated HWS had relatively more columnar dendrite structure and martensite than

Non-HT HWS, and the amount of secondary phases were increased along the grain boundaries. The

secondary phases were identified as the M7C3, which can lead to high strength and hardness, by

EPMA. It was investigated that heat-treated HWS has a relatively superior mechanical property with a

large number of secondary phases (M7C3), compared with Non-heat treated HWS and the carburized

SCM420.

| Keywords | Hardfacing, Directed Energy Deposition (DED), Heat Treatment, Microstructure, Intermetallic Phase

Analysis of the Intermetallic Phase on the Effect of Local Surface Reinforcement in SCM420

P17


ISMT 2019 102

Gihoon Moon1ㆍCheolmin Ahn1ㆍWonho-Kim1

Sunghwan Park2ㆍ Eunkyung Lee*

1 Korea Maritime & Ocean University 2 Dong Eui University* Korea Maritime & Ocean University

A Hybrid brake disk with aluminum and cast-iron dissimilar casting was developed to improve

lightweight and heat dissipation of this application. In the interface on the dissimilar casting,

mechanical properties and bonding strength of the interface affected heat dissipation and safety

of brake disk. To investigate the characteristic of the interface on the dissimilar casting, the surface

coating in NH4Cl and hot-dip galvanizing were performed before heat treatment in order to form the

reaction layers and decrease the oxide film. It was confirmed that the thickness of reaction layers was

increased, and porosity was decreased with reducing Fe2O3 oxide film of cast-iron, after the surface

coating and heat treatment. T4, T5, and T6 heat treatment with various cooling rates were applied

to understand the effect of heat treatment on the mechanical property of the interface such as a

thickness of reaction layers and bonding strength. The effects of heat treatment and cooling rates on

the mechanical property were investigated by Analysis of Variance (ANOVA) for the optimal process.

Furthermore, the presence of the intermetallic phases formed by various conditions was analyzed in

order to characterize the mechanism of mechanical property.

| Keywords | Dissimilar casting, Interface, Bonding strength, Reaction layer Heat treatment

Improvement of bonding strength on the interfaceof a disk brake produced by aluminum/cast-iron

dissimilar casting

P18




Sung-Cheol Park1ㆍ Im-Jeong Cheon2ㆍ Jae-Han Son2ㆍHyun Park2

Sung-Kyu Hong2ㆍKyung-Hun Lee*

1 Korea Maritime & Ocean University 2 RHINOX CO., LTD* Korea Maritime & Ocean University

In this study, a new type of tandem drawing process for a high-purity stainless steel(HPSS) drawn

product is proposed to obtain higher production rate and improve dimensional accuracy. The new

tandem drawing process consists of 4-idle roll dies and a conventional drawing die. The idle roll dies

has an advantage such as the reduction of the drawing load due to the low friction, which can lead

to the higher reduction ratio. Also, drawing with dies in tandem can contribute to the improvement of

tool life by applying the back-tension effect. However, the high reduction ratio and back-tension effect

rather lowers the dimensional accuracy. Thus, we developed a method for the roll profile design based

on the local offset method and regression model for free surface shape prediction. Thereafter, the

Taguchi method, one of the design of experiments(DOE) techniques, and finite element(FE) analysis

were applied to derive the optimum process condition for the dimensional accuracy. In addition,

the drawing force prediction model was developed by Geleji’s analytical model and cross-sectional

method to evaluate the feasibility of the designed process. Finally, the tandem drawing experiments

were carried out for the verification. It was found that results of experiments were in good agreements

with the analytical results and led to a drawn product with a sound shape and moderate dimensional

accuracy within an allowable tolerance, which proved the effectiveness of the suggested process.

| Keywords | Tandem Drawing Process, Idle Roll Die, Roll Profile Design Taguchi Method, Drawing Force Prediction Model

Design of New Tandem Drawing Process to Manufacture High-Purity Stainless Steel Drawn Products for Mass

Flow Controllers

P19


ISMT 2019 104

Katsuya Fukuda1ㆍQiusheng Liu2ㆍJongdoc Park*

1 Oshima College 2 Kobe University * Oshima College

The pool boiling CHFs (critical heat fluxes) were investigated to clarify the generalized phenomena

of transition to film boiling at transient condition. The CHFs were measured on a 1.0 mm diameter

platinum horizontal cylinder for exponential heat generation rates with various periods in a saturated

liquid FC-72 at atmospheric pressure. The incipience of boiling processes was completely different

depending on the pre-pressurization of liquid and the surface condition of cylinder. The trend of typical

CHFs was clearly divided into the first, second, and third groups for long, short, and intermediate

periods, respectively. Due to the effect of pre-pressurization, the boiling incipience mechanism was

replaced from that by active cavities entraining vapor to that by the HSN (heterogeneous spontaneous

nucleation) in originally flooded cavities. It was clarified that the transient CHFs belonging to the

second and third group were significantly affected by the surface condition of cylinders.

| Keywords | Critical heat flux, Pool boiling, Pre-pressurization, Surface condition

Boiling CHFs on Platinum Cylinder in a Liquid FC-72

P20




Mohammad Moonesun1

1National University of Shipbuilding Admiral Makarov (NUOS)

This research aims to study the seakeeping behavior of submarine close to sea water surface. At the

depths close to sea level, the submarine, experiences the effect of ocean waves. Due to these dynamic

effects on submarines, small and medium submarines cannot perform the snorting operation in rough

and stormy sea properly. The method of this study is based on the numerical method. For verification

of the results, some experiments are done in the towing tank of Admiral Makarov University. As a

result of this study for enabling the small and medium submarines for navigating and snorting in

rough ocean waves, the unique innovative system of "Moon-Korol" is presented as a new patent and

the main result of this thesis.

| Keywords | Submarine, Snorkel, Seakeeping, wave spectrum, Pitch, Heave.

Submarine Motions at Near Surface Depth under Irregular Ocean Waves

P21


ISMT 2019 106

Mohammad Moonesun1,2ㆍ Alexander Ursolov2ㆍ Asghar Mahdian1

1Malek-Ashtar University of Technology2 National University of Shipbuilding Admiral Makarov (NUOS)

The present paper discusses an optimum hydrodynamic shape of a submarine sailing in terms of

minimum submerged resistance. Sailing is a vertical hydrofoil which encompasses of masts, a diver

exit tank and a main hatch. In this study, several sailing shapes are investigated. The vertical section

of the sailing is a symmetric foil like NACA0030. This study aims at providing an optimum shape of the

sailing, utilizing the CFD method and the "Flow Vision" software. Resistance can be regarded as one

very important parameter in hydrodynamic design of a naval submarine sailing. Location of the sailing

imposes huge resistance and a longitudinal moment. Accordingly, the better the hydrodynamic form,

the less the resistant and moment. The focus of the research is on the curvature of the front and the

aft parts of the sailing. Domain is considered at a fully submerged mode excluding free surface effects.

Several common sailing shapes are explored. The CFD analysis based on RANS equations as base

is applied on all proposed shapes. In all the investigated models, the following parameters remain

constant: the velocity, the dimensions of the domain, the dimensions of submarine, and of the sailing

longitudinal location. For each model, however, the front and aft parts of sailing are changed.

| Keywords | CFD, Submarine, Sailing, Hydrodynamic, Resistance, Optimum, Shape.

CFD analysis on the optimization of submarine sailing shape

P22




Kwang-Deok Choi 1ㆍInsung Choi 1ㆍSangeon Park 2

Jeong Suh 1 ㆍ Su-Jin Lee*

1 Korea Institute of Machinery & Materials 2 Sungwoo Hitech* Korea Institute of Machinery & Materials

Vehicle lightweight is one of the major concerns of many of the world's leading related companies.

Research on the weight reduction of vehicle body has attracted attention as a way to maximize

engine efficiency in society where environmental awareness and energy saving are becoming more

important. Various materials have been developed to satisfy the appearance and performance that

satisfy the customer. In order to apply various materials in the right place for lightweight vehicle body,

it is required to develop a bonding and fastening method of new materials and different materials. In

this study, we introduce the direct welding and joining results of light metal and materials using high

power laser beam and introduce the laser assist process which is used for mechanical fastening by the

dissimilar material joining method of many materials having different physical properties.

High-power laser processing has the advantage of being able to advantageously not only weld

joint processes but also mechanical fastening as a supporter. It is beneficial to perform a free hole

operation in mechanical fastening, and it is possible to induce a fastening process which facilitates

various additional processes such as increasing the strength of the rivet or lowering the strength of

the material. A number of years ago, the Korea Institute of Machinery & Materials has developed a

laser-assisted machining (LAM) method for cutting high-strength ceramic materials. This is because

the CBN tool irradiates the surface of the ceramics specimen to be machined before the turning to

induce melting and thermal damage to a part of the ceramics to advantage the machining by the tool

to increase the tool life and reduce the cutting force. The laser is a non-contact type machining tool

that can cut materials, process halls, surface treatments, heat treatments, and is suitable for hybrid

processing. It has a good performance as the processing technology that induces the change of the

material characteristics of the composite material cutting, the hole processing, the metal processing

and the high power laser, and suggests the possibility of laser assisted processing based on the

experimental results.

| Keywords | Laser welding, Laser joining, Laser-assisted processing Composite material, Mechanical fastening

Laser Welding and Joining Technology for Lightweight Materials

P23


ISMT 2019 108

Seong-Wan Kim1ㆍKidong Park1ㆍJun Kang1ㆍJongsoo Kim1

Myeonghoon Lee1ㆍYeonwon Kim1ㆍYongsup Yun*


Water pollution by microorganisms make ecosystem disturbance by exchanging of vessel’s ballast

water. To eliminate alien species, various system has been introduced to solve water pollution such

as UV treatment, indirect or direct electrolysis, ozone treatment, chemical compounds and plasma-arc

method. Arc discharge system in the sea water require high voltage to generate bubbles and acoustic

wave for making damage on the cell. To make stable and efficient high voltage, its electric elements

are key value due to characteristic of resistance, inductance, capacitance. In this paper, we analyzed

electric system with different range of electric elements by PSIM program. There are suitable value of

each electric element with effective ballast water treatment.

| Keywords | Arc discharge, Ballast water treatment, Electric element

Arc discharge system in the seawater for the BWMS sterilization

P24




Junyeop Lee 1ㆍCheolmin Ahn1ㆍJaehui Bang1ㆍMinhye Kang1

Yeeun Jeong1ㆍDosik Shim1ㆍEunkyung Lee*

1Korea Maritime & Ocean University*Korea Maritime & Ocean University

HWS(High Wear Resistance Steel) is used widely as a tool steel with high hardness, wear resistance

and excellent weldability in directed energy deposition(DED) of additive manufacturing. To investigate

the effect of the heat treatment on mechanical property, HWS deposited by DED was quenched

at 1060℃ and tempered at 520℃ on the surface of SCM420. The microstructures of non-heat-

treated and heat-treated HWS were analyzed by SEM, EDS and hardness test. In hardness test, the

value of non-heat-treated and heat-treated deposited HWS was 718HV, 780HV, respectively. The

microstructure of non-heat treated HWS showed the columnar zone and equiaxed zone owing to the

repeated heating in DED process and the microstructure of heat-treated HWS had fine chromium-

rich carbides, which formed a columnar dendrite by heat treatment. It was considered that austenitic

structure was transformed into martensite because of insufficient diffusion of carbon with fast cooling

rate, dissolving carbons in the interstitial sites. The deposited HWS has relatively good mechanical

properties rather than non-heat treated HWS with the large amount of martensitic structure and fine

columnar dendrite with chromium-rich carbides.

| Keywords | Additive manufacturing, Heat treatment, Hardness, Microstructure


P25


ISMT 2019 110

Tae-Youl Jeon1ㆍYoung-Chan Lee1ㆍChang-Min Lee1

Jun Kang1ㆍ Byung-Gun Jung*


Recently, new and existing ships apply the energy-saving system, which is consist of a Variable

Frequency Drive for Sea Water pump motor on a central cooling system. Currently, the central cooling

system controls the rotational speed of the Sea Water pump and the three-way valve on the Low-

Temperature Fresh Waterside of the central cooler. This system uses the PID control technique for each

of the three-way valve and the Sea Water pump. So the Low-Temperature Fresh Water temperature

control of the Central Cooling System may not be easy as the Sea Water temperature changes and

the load change on the main engine. To improve the Low-Temperature Fresh Water temperature

control performance of the current system, the feedforward control method is adopted to minimize the

input value of the pump motor and to follow the set temperature as soon as possible. In conclusion,

computer simulation is performed by combining the opening of the three-way valve and the Sea Water

pump load control. The simulation modeling is based on the Central Cooling System of T.S. HANBADA.

If the feedforward controller applies to the Central Cooling System in the future, efficient pump

operation is expected to reduce the energy consumption of the vessel and also less air pollution.

| Keywords | Central cooling, Feedforward control, variable frequency drive energy saving

A Study on Feedforward Control for Energy-Saving of Central Cooling System

P26




Myo Thant Zin1ㆍJi Won Yoon1ㆍDae Kwon Koh1

Jeong Min Cheon2ㆍSuk Ho Jung*

1Pukyong National University2Korea Marine Equipment Research Institute

*Pukyong National University

International Maritime Organization is tightening up on regulations for Air pollution and global

warming gas from ship. The dual fuel diesel engine with natural gas is one of resolution strategy for

control and much research has been done on it. A dual fuel diesel engine of 2000cc with common-rail

system is adopted and effects of common-rail pressure and mixing ratio of diesel oil and natural gas

on combustion and emission characteristics is investigated in this study. The common-rail pressure is

set on three-step test by 10 MPa and natural gas ratio is set on four-step test properly each engine

load. Nitrogen oxides are increased by 0.2 g/kWh as common-rail pressure is increased by 10MPa.

The specific energy consumption and nitrogen oxides are decreased but carbon monoxide and total

hydrocarbon are increased as natural gas ratio is increased.

| Keywords | Dual fuel, Diesel engine, Natural gas common-rail pressure engine performance

Effect of common-rail pressure and natural gas proportion on performance of dual fuel diesel engine

P27


ISMT 2019 112

Sung-Cheol Park1ㆍ Jin-Gyu Han2ㆍ Kyung-Hun Lee*

1Korea Maritime & Ocean University2Hyundai Steel Company

*Korea Maritime & Ocean University

The purpose of this study is to predict the FEC in hot strip finishing mills and to prevent the FEC by

controlling the rolling condition. Theoretical model based on the slab method is developed to predict

the FEC by taking entrance angle of strip, friction condition and back tension into account. To verify the

validity of the developed theoretical model, theoretical curvature value is compared to the result of

FEA and consequently, it shows that the results calculated by theoretical model are good agreement

with those calculated by FEA. Furthermore, the curvature control model based on geometrical and

mathematical approaches that can reduce the curvature by control of roll speed ratio between upper

and lower rolls is suggested. To verify the proposed curvature control model, FEA is performed. And

it is shown that the FEC can be considerably reduced by using the suggested model. Therefore, the

proposed control model to reduce the FEC in hot strip finishing mill can be used to improve the quality

of rolled product.

| Keywords | FEC Control Model, Hot Strip Finishing Mill, FE Analysis, Looper Position

FEC Control Model of Hot Strip Finishing Mills

P28




Young-Chan Lee1ㆍJun Kang1ㆍTae Yul Jeon1ㆍByung-Gun Jung*


According to IMO, International shipping transports more than 80 per cent of global trade to peoples

and communities all over the world. Global seaborne trade is doing well, supported by the 2017

upswing in the world economy. While shipping industry have been continuously increasing, main

causes of accidents at sea is human elements. Approximately 66% of the world‘s merchant fleets are

manned by crews of more than one nationality. This paper presents how difficulty Korean seafarers on

board ship communicate in English and How to solve this problem.

| Keywords | IMO, Marine English, Marine Engineer, Unified Competence

Development of Unified Competence on Marine engineer English

P29


ISMT 2019 114

Bo-Rim Ryu1ㆍSeung-Hun Lee2ㆍJin-Uk Lee2ㆍHo-Keun Kang*

1 BEST Co., Ltd. 2 Korea Maritime & Ocean University* Korea Maritime & Ocean University

Recently, offshore plant orders on Korea shipyards are increasing but the localization rate of core

equipment is too low (about 20% of total equipment) so development and investment are needed.

Offshore plants must be designed differently according to the specifications and field characteristics

required by the client. In particular, the topside module, unlike the land plant, requires a lot of design

conditions related to environment and safety, as well as limited conditions such as spatial constraints

and structure movement. Therefore, the initial structural stability of the topside module should be

evaluated and the results can be reflected in the actual design. In this study, structural analysis was

performed considering loads applied to the steel structure of 500ton class Topside Module. Also, for

improving the reliability of the analysis, the acceleration and load combinations by Nuaticus Hull v20

of the DNV classification was applied. As a result, on five loading conditions, the acceptance criteria

was 160Mpa and the stressed condition was 41~51Mpa in bending stress. In shear stress, acceptance

criteria was 90Mpa and stressed condition was 15~19Mpa. In conclusion, when the topside module

is installed on the offshore plant, it is confirmed that the structural strength is sufficient to be about

30% of the allowable stress level even when considering dynamic load according to the marine

environment.

| Keywords | Offshore, Topside Module, Structure Stability

A Study on Initiative Structural Stability Evaluation for500ton class Topside Module

P30


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