Indrasis Chakraborty

Permanent AddressFlat-1D, Victoria Enclave1947, Garia Main Road, Kolkata 700084(+1) 778-999-0007indrasisju AT gmail DOT comca.linkedin.com/pub/indrasis-chakrobarty/17/81b/547/

EDUCATION

Master of Technology, Mechanical Engineering DepartmentIndian Institute of Technology, Kharagpur, India 2010-2012THESIS - Rayleigh-Ritz approximation with pointwise inextensibility for vibrations of a catenarySUPERVISOR - Prof. Anindya ChatterjeeCGPA 9.45 (2nd in class)

Bachelor of Engineering, Mechanical Engineering DepartmentJadavpur University, Kolkata, India 2006-2010THESIS - Design and Fabrication of ’Combined Separating and Throttling Calorimeter’ for Online Measure-ment of Dryness Fraction of SteamSUPERVISOR - Dr. Sandip DasCGPA 8.62 (1st class Hons.)

Academic Completed Projects

• Design and Fabrication of ’Combined Separating and Throttling Calorimeter’ for OnlineMeasurement of Dryness Fraction of SteamObjective: Present work relates to the online measurement of dryness fraction of the steam supplied tosteam-powered processes to obtain further information about the process plant and steam generatorinstantly. To produce 100 percent dry steam in a boiler, and keep the steam dry throughout the pipingsystem, is in general not possible. As droplets of water will escape from the liquid phase surface becauseof turbulence and splashing when bubbles of steam break through the water surface, the steam spacewill contain a mixture of water droplets and steam. In addition, heat loss in the pipes will condensesteam to droplets of water. So a two phase mixture of steam and water is unavoidable. Thus thepresent contrivance seeks to provide a continuous, on-line method of measuring the dryness fractionof the whole steam flow supplied to a process such that the measured value of the dryness fractionmay also be input to the steam generator control circuit as a feedback signal. In process plants suchas chemical plant, medicine plant or any other plant where wet steam is a basic requirement, thisinstrument will play a vital role to control and monitor the process.Supervisor: Dr. Sandip Das (Jadavpur University, India)

• Cracked Beam VibrationObjective: To learn vibration behaviour of a cracked beam (experimentally and with help of ADAMS)Supervisor: Prof. Sumanta Neogi (Jadavpur University, India)

• Application of Non-Obstructive Particle DampingObjective: Apply NOPD technique for reducing motorbike vibration. I worked on this problem duringmy 3 months internship program in IISC, Bangalore, India.Supervisor: Prof. Anindya Chatterjee (Indian Institute of Technology, Kharagpur)

• Oscillations of large soap bubblesObjective: Find a relation between frequency of oscillation and radius of a bubble. I worked on thisproblem during my 3 months internship program in IISC, Bangalore, India.Supervisor: Prof. Anindya Chatterjee (Indian Institute of Technology, Kharagpur)

• Rotating cube undergoing projectile motionObjective: Solve the motion of a rotating cube (in projectile) with the help of Virtual Reality toolbox(MATLAB).Supervisor: Prof. Sumanta Neogi (Jadavpur University, India)

• Application of FDM in elliptical PDE, for non-uniform meshObjective: Solve modified laplacian equation in cylindrical coordinate on a rotating circular disc (withneumann and dirichilet boundary condition), using both MATLAB and parallel processing in CUDA.Supervisor: Prof. Anindya Chatterjee (Indian Institute of Technology, Kharagpur)

• Rayleigh-Ritz approximation with pointwise inextensibility for vibrations of a catenaryObjective: In-plane and out of plane vibration analysis of a catenary is carried out considering thecatenary to be inextensible and not necessarily shallow. The inextensibility constraint is exactly in-corporated in the analysis. Unlike prior studies which are based on either considering discrete massesconnected with strings or non-linear PDEs, here a Rayleigh-Ritz approach is directly implemented forthe first time. Frequencies of a hanging chain are calculated using the same approach and the resultsare compared with the analytical solution. For a given configuration of the catenary, the natural fre-quencies are semianalytically calculated using MAPLE. A general MATLAB code is written, that willalso numerically calculate the natural frequencies and mode shapes for a given catenary configuration,and complete agreement is obtained with the MAPLE code. Results are also verified using a simpleexperiment. Special configurations of the catenary are calculated where two modes have frequencies ina 1:2 ratio.Supervisor: Prof. Anindya Chatterjee (Indian Institute of Technology, Kharagpur)

JOURNAL PUBLICATIONS

• “Experimental and Theoretical Studies on Harmonic Response of a Beam with Offset Support”, IChakraborty, A Mukherjee, A Nandi, S Neogy in Proceedings of the Indian National Science Academy76 No. 3 pp 141-147 (2010).

WORK EXPERIENCES & INTERNSHIPS

Edison Engineer, EEDP, Power and Water, EnergyGeneral Electric, BEC, India July 2012 - Oct. 2013Hiring Manager - Bharatesh Kalasur (in.linkedin.com/pub/bharatesh-kalasur/2/98b/275)HR manager - Amit Upadhyay (in.linkedin.com/pub/amit-upadhyay/7/434/6b4)Experience - 18 months

Summer Intern, Mechanical Engineering DepartmentIndian Institute of Science, Bangalore, India May 2009 - July 2009SUPERVISOR - Prof. Anindya ChatterjeeDuration - 3 months

Industrial Projects

• Fuel Budget Pressure Tool Development Jun. 2013 - Oct. 2013Organization: General Electric, IndiaObjective: This tool is extensively used across General Electric application engineers. This tool helpsto calculate pressure drops across various components of a GT frame and also give an estimation ofNozzle pressure ratio and valve stroke. User of this tool has to select GT frame (9FA, 7FA, 7E, etc...)and combustion technology (DLN 2.6, DLN 2.6+, DLN 1, etc....) inside the tool before running it,and give ambient condition (site temperature and site elevation). Then this fuel pressure budget toolwill give you the estimate of pressure drop across various components, and finally give you an estimateof minimum fuel supply pressure required. One another feature of this tool is Fuel Nozzle design andValve stroke calculation. Customer can visualize nozzle pressure ratio and valve stroke variation fordifferent ambient temperatures and different GT loads.

• Dew Point Temperature Calculation Tool Jun. 2013 - Oct. 2013Organization: General Electric, IndiaObjective: Developed an Excel VB based interface which calls HYSYS in the background for estimatingfuel supply temperature to avoid both moisture and dew point condensation for given fuel compositions.This tool also estimates outlet temperature of an isenthalpic expansion through valves. Automatedreport is generated by this tool for future use.

• Wind Turbine Water Accumulation Simulator Jan. 2013 - Feb. 2013Organization: General Electric, IndiaObjective: Developed a SIMULINK model, which helped to estimate the water accumulation rate ina wind turbine compartment for given atmospheric conditions. This model helps to predict the wateraccumulation in a wind turbine compartment during idle time of operation in the field. This work wasdone for GE wind turbine team (India), and helped to eliminate the cause of this water accumulationin GE wind turbine hub, located in one of India site.

• Az-zour Evaporative Cooler Design Feb. 2013 - May. 2013Organization: General Electric, IndiaObjective: Complete evaporative cooler design for Az-zour project. Evaporative cooler helps to controlboth temperature and humidity of inlet air of Gas Turbine. I designed a evaporative cooler, startingfrom network design in Flowmaster, pump design and also sump capacity determination. Finallyproposed design is validated analytically and submitted for fabrication. This project helped me to gainexpertise in Flowmaster, along with gave me an essence of owning a complete project.

• 9FA.04 Combustor Flowsleeve Design July 2013 - Oct. 2013Organization: General Electric, IndiaObjective: This project was under NPI program in GE. I helped to do a CFD study of axial flowsleeve for 9FA.04 combustor. This project helped me understand the intricate details of combustiontechnology and the flow path inside a combust or nozzle.

COURSES COMPLETED

Applied Elasticity, Vibration Analysis, Automatic Control, Finite Element Methods in Engineering,Machinery Fault Diagonstics and Signal Processing, Experimental Stress Analysis, Advanced Mechanics of

Solids, Lubrication and Rotor Dynamics, Stability of Elastic Systems, Non-linear Vibrations

CERTIFICATIONS

• Fundamental of Leadership TrainingGE Power & Water

• Power Plant Fundamental TrainingGE Power & Water

INTERESTS

Advanced Dynamics, Linear and Non-linear Vibration, FE Method, Acoustics, Control and Stability,Applied Mathematics

SKILLS

• Operating Systems : MAC OS, Microsoft Windows

• Programming Languages : VBA, JAVA, TCL/TK

• Software Packages : MATLAB, ADAMS (AVIEW), ANSYS, MAPLE, CUDA C (NVIDIA GPU),HYSYS, SIMULINK, UG NX, HYPERMESH, LATEX