@Conference collection

Powders and Grains 2013

Proceedings of the 7th International Conference on

Micromechanics of Granular Media

Sydney, Australia

8-12 July 2013

Editors

AibingYu

Kejun Dong

Runyu YangUniversity of New South Wales, Sydney, Australia

Stefan LudingUniversiteitTwente, Enschede, Netherlands

All papers have been peer reviewed.

Sponsoring OrganizationsAssociation forthe Study of the Micromechanics of Granular Media (AEMMG)University of New South Wales (UNSW)

Curtin University (CU)UniversiteitTwente (UT)JMBC Research School for Fluid Mechanics, Netherlands

Elsevier, publisher of Advanced PowderTechnology, Particuology and PowderTechnology

To learn more about AIP Proceedings visit http://proceedings.aip.org

Volume 1542

Effect of fabric on the strength ofgranular materials in biaxial compression

Homayoun Shaverdi, Mohd Raihan Taha, and Farzin Kalantary

xiii

4. GRANULAR LIQUIDS4.1. Unconfined and Surface Flows

4.1.1. Theoretical

Granular force on objects and correlation length: Drag coefficient enhancement in low Froude

number flow regimesThierry Faug 617

Numerical analysis ofimpact processes ofgranular jetsTomohiko G. Sano and Hisao Hayakawa 622

Inclined granular flows on collisional shear layersJames T. Jenkins and Diego Berzi 626

An energy-based splash function for the impact of particles with granular beds

Chuan-Yu Wu 630

Impaction of particle streams on a granular bed

Sida Liu, Zongyan Zhou, Kejun Dong, Aibing Yu, John Tsalapatis, and David Pinson 634

Dissipative discrete element model applied to rock avalanches

G. Mollon, V. Richefeu, P. Villard, and D. Daudon 638

Jumps and bores in bulky frictional granular flows

Thierry Faug 642

Effect of cohesive force on the formation of a sandpileK. J. Dong, R. P. Zou, K. W. Chu, R. Y. Yang, A. B. Yu, and D. S. Hu 646

4.1.2. Experimental

Identification of avalanche precursors by acoustic probing in the bulk oftilted granular layersM. Duranteau, V. Tournat, V. Zaitsev, R. Delannay, and P. Richard 650

Study of solids contact shearing and collisions in granular debris flows

Gordon G. D. Zhou, Q. C. Sun, and M. L. Fei 654

Design of protection structures: The role ofthe grainsize distribution

Benjy Marks, Aurelio Valaulta, Alexander Puzrin, and Itai Einav 658

Tumbling sandpiles in a fluid

Farhang Radjai, Vincent Topin, Frederic Perales, and Yann Monerie 662

Experimental investigation on failure mode of fine-grain rainfall-induced debris flow

Zhao Cheng, Zhou Jian, Li Yexun, and Tian Jiashen 666

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4.2. Confined flow

Mode-coupling theory for sheared granular liquids

Koshiro Suzuki and Hisao Hayakawa

Velocity and density scaling at the outlet of a silo and its role in the expression ofthe mass flow

rate

D. Maza, A. Janda, S. M. Rubio-Largo, I. Zuriguel, and R. C. Hidalgo

Prediction of silo-vibrations using a modified lambdameter

Stefan Jackel, Ralf Schunemann, Thomas Miitze, and Urs A. Peuker

Effect of friction and cohesion on anisotropy in quasi-static granular materials under shear

A. Singh, V. Magnanimo, and S. Luding

Avoiding clogs: The shape of arches and their stability against vibrations

Angel Garcimartin, Celia Lozano, Geoffroy Lumay, and Iker Zuriguel

The influence of particle shape on granular Hopper flow

G. Mollon and J. Zhao

Microscopic analysis of Hopper flow with ellipsoidal particlesSida Liu, Zongyan Zhou, Ruiping Zou, David Pinson, and Aibing Yu

Silo clogging reduction by placing an obstacle above the outlet

C. Lozano, I. Zuriguel, A. Janda, A. Garcimartin, R. Arevalo, and D. Maza

Dynamics ofrotating spirals in agitated wet granular matter

Kai Huang, Lorenz Butzhammer, and Ingo Rehberg

Visualising shear stress distribution inside flow geometries containing pharmaceutical powder

excipients using photo stress analysis tomography and DEM simulations

Saeed Albaraki, S. Joseph. Antony, and C. Babatunde Arowosola

Pipe transport in underground mining: An experimental approachA. Janda, I. Zuriguel, J. Bienzobas, A. Garcimartin, and D. Maza

4.3. Mixing and Segregation4.3.1. Theoretical andNumerical

Size separation ofbinary mixture under vibration

Chuanping Liu, Lige Tong, Shaowu Yin, Peikun Zhang, and Li Wang

Segregation in dense, dry, inclined flows ofbinary mixtures of grainsMichele Larcher and James T. Jenkins

xv

Influence of rotation on BN separation in binary particle systemPing Wu, Shuang Wang, Ziang Xie, Yuming Huang, Lige Tong, Peikun Zhang, Shaowu Yin,

Chuanping Liu, and Li Wang 722

DEM simulation ofparticle mixing for optimizing the overcoating drum in HTR fuel fabrication

Malin Liu, Zhenming Lu, Bing Liu, and Youlin Shao 726

Mixing behaviour of cohesive and non-cohesive particle mixtures in a ribbon mixer

H. Musha, K. Dong, G. R. Chandratilleke, J. Bridgwater, and A. B. Yu 731

Simulations on the flow segregation problem in bidimensional pilesJesica Benito, Rodolfo Uftac, Ana Maria Vidales, and Irene Ippolito 735

Effects of size and density differences on mixing of binary mixtures of particlesH. Musha, G. R. Chandratilleke, S. L. I. Chan, J. Bridgwater, and A. B. Yu 739

Radial segregation driven by axial migrationXiaoxing Liu, Wei Ge, and Jinghai Li 743

Formation of ordered structure and its effect on particle percolation in a vibrated bed

A. H. Esfandiary, K. J. Dong, and A. B. Yu 747

Numerical analysis of separation and mixing dynamics in multiphase granular systems

Tracy Rushmer, Antoinette Tordesillas, David M. Walker, and Nick Petford 751

4.3.2. Experimental

Granular segregation in quasi-2d rectangular bin

Sandip H. Gharat and D. V. Khakhar 755

The formation ofpolygon-shaped patterns in vibrated, cylindrical granular beds

G. Lu, J. R. Third, M. H. Kohl, and C. R. Muller 759

Pattern formation in a flat rotating boxFrank Rietz and RalfStannarius 763

Segregation of binary mixtures of spheres and ellipsoidsChangxing Li, Zongyan Zhou, Ruiping Zou, David Pinson, and Aibing Yu 767

Segregation and convection rolls in two-dimensional packingsFrank Rietz 771

Patterns and velocity field in vertically vibrated granular materials

Istafaul H. Ansari and Meheboob Alam 775

Dry coating in a high shear mixer: Comparison of experimental results with DEM analysis of

particle motions

E. Serris, A. Sato, A. Chamayou, L. Galet, M. Baron, P. Grosseau, and G. Thomas 779

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5. GRANULARGASES

5.1. Theoretical

Evidence for a new force in dissipative system derived from Boltzmann equation: Consequencefor the mechanics ofthe material point, experimental evidences and possible applications

Pierre Evesque

Scaling ofthe normal coefficient of restitution for wet impactsThomas Miiller, Frank Gollwitzer, ChristofA. Kriille, Ingo Rehberg, and Kai Huang

Asymmetric velocity distribution in boundary-heating granular gas and a hydrodynamic

description

Yanpei Chen, Meiying Hou, Pierre Evesque, Yimin Jiang, and Mario Liu

Shearbanding and inhomogeneous states in granular fluid

Meheboob Alam and Priyanka Shukla

Characteristics of Casimir-like forces in fluidized granular media

M. Reza Shaebani, Jalal Sarabadani, and Dietrich E. Wolf

5.2. Numerical and Experimental

Can one "Hear" the aggregation state of a granular system?ChristofA. Kruelle and Almudena Garcia Sanchez

Microgravity experiments on a granular gas ofelongated grainsK. Harth, T. Trittel, U. Kornek, S. Home, K. Will, U. Strachauer, and R. Stannarius

Collective granular dynamics in a shaken container at low gravity conditions

J. E. Kollmer, A. Sack, M. Heckel, F. Zimber, P. Mueller, M. N. Bannerman, and T. Poschel

Experimental study of a granular gas homogeneously driven by particle rotations

E. Falcon, J.-C. Bacri, and C. Laroche

Pattern dynamics of cohesive granular particles under plane shearSatoshi Takada and Hisao Hayakawa

Effect of gravity on particle dispersion in a horizontally vibrating bed

Kejun Dong, Kunio Shinohara, and Aibing Yu

6. PARTICLE PROPERTIES

6.1. Interparticle Interactions

Rolling resistance effect for sheared granular materials in the inertial regime

Hayley H. Shen

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A new contact model for modelling of elastic-plastic-adhesive spheres in distinct element method

Massih Pasha, Selasi Dogbe, Colin Hare, Ali Hassanpour, and Mojtaba Ghadiri

Wear particles: Influence on local stress and dynamical instabilities

Viet-Hung Nhu, Mathieu Renouf, Francesco Massi, and Aurelien Saulot

From particle to powder properties - A mesoscopic approach combining micro-scale

experiments and X-ray microtomographyS. Strege, H. Zetzener, and A. Kwade

Unitary stick-slip motion in granular beds

J. E. Hilton, P. W. Geary, and A. Tordesillas

Finite element analysis ofthe contact forces between viscoelastic particlesQ. J. Zheng, H. P. Zhu, and A. B. Yu

Calibration and validation of DEM rolling and sliding friction coefficients in angle of repose and

shear measurements

Piotr Frankowski and Martin Morgeneyer

Numerical simulation of interaction between two PM2.5 particles under acoustic travelling waveconditions

Fengxian Fan, Mingjun Zhang, and Chang Nyung Kim

An experiment investigation on electrification by collision between chemically identical glassparticles

L. Xie, Y. Jiang, N. Bao, K. Han, and J. Zhou

Rebound characteristics for ash particles impacting a planar surface

Ming Dong, Sufen Li, Jian Han, and Jun Xie

Damping ofrotating beams with particle dampers: Discrete element method analysisD. N. J. Els

Identification of micro parameters for discrete element simulation of agglomeratesStefan Palis, Sergiy Antonyuk, Maksym Dosta, and Stefan Heinrich

6.2. Size and Shape Effects

Effect of size polydispersity on micromechanical properties of static granular materials

M. R. Shaebani, M. Madadi, S. Luding, and D. E. Wolf

Slow dynamics for elliptical particles under continuous shear and cyclic compressionSomayeh Farhadi, Robert P. Behringer, and Alex Zihao Zhu

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A benchmark for particle shape dependenceGael Combe, Cecile Nouguier-Lehon, Emilien Azema, Krzysztof Szarf, Baptiste Saint-Cyr, Marie

Chaze, Farhang Radja'i, Pascal Villard, Jean-Yves Delenne, Vincent Richefeu, Philippe Sornay,Charles Voivret, and CEGEO Group 883

The influence of aspect ratio and roughness on flowabilityColin Hare and Mojtaba Ghadiri 887

Comparison of the effects of rolling resistance and angularity in sheared granular media

Nicolas Estrada, Emilien Azema, Farhang Radjai, and Alfredo Taboada 891

Influence of the feeding rate on the packing properties of faceted particlesR. C. Hidalgo, M. Acevedo, I. Zuriguel, I. Pagonabarra, and D. Maza 895

6.3. Size Reduction

Estimation of new surface generation and energy analysis during particle fracture

Manoj Khanal and Jurgen Tomas 899

A probabilistic approach of confined comminution in polydisperse granular materials

Carlos Ovalle, Charles Voivret, Christophe Dano, and Pierre-Yves Hicher 903

Impact of numerical models on fragmentation processes

Mathieu Renouf, Belien Gezahengn, Micheline Abbas, and Florent Bourgeois 907

Radical edge crack problem of a circular disk under circumference load

W. S. Xiao and H. P. Zhu 911

A study on the effect of particle shape and fragmentation on the mechanical behavior of granularmaterials using discrete element method

Ali Aminzadeh and Ehsan Seyedi Hosseininia 915

Experimental studies on the kinematics of cutting in granular materials

T. G. Murthy, C. Saldana, S. Yadav, and F. Du 919

Evolution of sand crushability and its effect on particle-scale energy allocation

Bo Zhou, Runqiu Huang, and Jianfeng Wang 923

Numerical simulation study of quasistatic grinding process on a model granular material

V. P. B. Esnault and J.-N. Roux 927

Analysis of seed processing by the distinct element method

Mehrdad Pasha, Colin Hare, Mojtaba Ghadiri, Patrick M. Piccione, and Scott Taylor 931

Numerical analysis of impact events in a centrifugal impact pin mill

C. Labra, J. Y. Ooi, J. F. Chen, and J. Sun 935

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7. COHESION

7.1. Theoretical and Numerical

Micromechanical properties of colloidal structures

A. Kwade, C. Schilde, C. Burmeister, M. Roth, P. Lellig, and G. Auernhammer

Electrically-enhanced deposition of fine particles on a fiber: A numerical study using DEM

Mengmeng Yang, Shuiqing Li, Guanqing Liu, and Qiang Yao

DEM study on the interaction between wet cohesive granular materials and tools

Takuya Tsuji, Yu Matsui, Yuta Nakagawa, Yuuichi Kadono, and Toshitsugu Tanaka

Numerical estimation of the restitution coefficient for dry and wet agglomeratesSergiy Antonyuk, Maksym Dosta, and Stefan Heinrich

Granular cohesion and fast rotators in the NEA populationPaul Sanchez and Daniel J. Scheeres

Assessing flowability of small quantities of cohesive powder using distinct element modellingMassih Pasha, Colin Hare, Ali Hassanpour, and Mojtaba Ghadiri

Particle scale investigation of flow and mixing ofwet particles in rotating drumsP. Y. Liu, R. Y. Yang, and A. B. Yu

DEM analysis ofeffects of particle properties and mixing conditions on particle attachment

processes

Jiecheng Yang, Chuan-Yu Wu, and Michael Adams

Flow of dry and wet granular materials: Numerical simulation results

Saeed Khamseh, Jean-Noel Roux, and Francois Chevoir

7.2. Experimental

Erosion rate and instability of a wet/dry granular interface

Gautier Lefebvre and Pierre Jop

Effect of cohesion on granular-fluid flows in spouted beds: PIV measurement and DEM

simulations

Runru Zhu, Shuiqing LI, and Qiang Yao

Behavior of cohesive powder in rotating drumsM. Wojtkowski, O. I. Imole, M. Ramaioli, E. Chavez Montes, and S. Luding

Experimental studies on the mechanics of cohesive frictional granular media

R. K. Kandasami and T. G. Murthy

Analysis of behavior of small agglomerated particles on two-dimensional vibrating plateMurino Kobayakawa, Shuji Matsusaka, and Shuji Matsusaka

xx

Influence of cohesive forces on the macroscopic properties ofgranular assemblies

Geoffroy Lumay, Jorge Fiscina, Francois Ludewig, and Nicolas Vandewalle 995

Incipient flow properties oftwo-component fine powder mixtures: Changing the fiowability of

smaller particlesTakehiro Kojima and James A. Elliott 999

Visualizing powder de-agglomeration upon impact with simultaneous flowing charge behaviourJin Wang Kwek, Desmond Heng, Sie Huey Lee, Wai Kiong Ng, Hak-Kim Chan, Jerry Heng, and

Reginald Tan 1003

Internal structure and fragmentation kinetics of silica granulesP. Grosseau, T. Dumas, O. Bonnefoy, L. Barriquand, L. Guy, and G. Thomas 1007

Influence ofthe pan pelletizer rotational velocity and the particles size on the agglomeration of

alumina oxide granulesZheni Radeva, Peter Muller, and Juergen Tomas 1011

8. FLUID AND PARTICLES

8.1. Particle-fluid Interactions

FEM-DEM simulation of two-way fluid-solid interaction in fibrous porous media

K. Yazdchi, S. Srivastava, and S. Luding 1015

Characterization of fluid-particle interactions in poly-disperse systemsFrancesco P. Di Maio and Alberto Di Renzo 1019

Capillary states of granular materials in the funicular state

Jean-Yves Delenne, Vincent Richefeu, and Farhang Radjai 1023

Preparation and characterisation ofuser-friendly PMMA microcapsules for consumer care

Xuemiao Pan, Ruben Mercade-prieto, David York, Jon A. Preece, and Zhibing Zhang 1027

Squeeze flow of a bi-viscosity fluid between two rigid spheresXu Chun-Hui, Zhang Mi, and Xu Yong 1031

A parametric study on the leakage-soil interaction due to a leaking pipe using the coupled DEM-LBM technique

X. Cui, J. Li, A. H. C. Chan, and D. N. Chapman 1035

Water retention in discrete element method

Yixiang Gan, Federico Maggi, and Itai Einav 1039

Free running droplets on packed powder beds

Catherine P. Whitby, Xun Bian, and Rossen Sedev 1043

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8.2. Suspension, Sedimentation, Saltation, and Dust Emission

Where to dig for gold? - Density segregation inside migrating dunes

Christopher Groh, Ingo Rehberg, and ChristofA. Kruelle 1047

Simulation of aeolian saltation

M. V. Carneiro and H. J. Herrmann 1051

Dust emission modelling around a stockpile by using computational fluid dynamics and discrete

element method

S. M. Derakhshani, D. L. Schott, and G. Lodewijks 1055

Scaling laws in aeolian sand transport: Erodible versus non-erodible bed

A. Valance, T. D. Ho, A. Ould El Moctar, and P. Dupont 1059

DEM-PFV analysis of solid-fluid transition in granular sediments under the action ofwaves

E. Catalano, B. Chareyre, and E. Barthelemy 1063

Coulombic wall slip of concentrated soft-particle suspensionsMichael Adams, Wei Liu, Zhibing Zhang, and Peter Fryer 1067

Effect of shear-induced diffusion on the transfer of heat across a sheared suspensionOuamar Rahli, Xiaolong Yin, and Bloen Metzger 1071

Pattern formation during capillary rising of a fluid front into a granular media

A. P. F. Atman, G. Combe, Thaysa R. M. Ferreira, and Jessica A. A. Barros 1075

Grain sedimentation with SPH-DEM and its validation

Martin Robinson, Stefan Luding, and Marco Marco Ramaioli 1079

2D DEM model of sand transport with wind interaction

L. Oger and A. Valance 1083

Wind tunnel studies on the vertical emission of sand grains from surface

L.Guo and N.Huang 1087

Rheology of dense suspensions: Insights from soft dynamics simulations

P. Rognon, C. Gay, and I. Einav 1090

Effect of ground granulated blast furnace slag particle size distribution on paste rheology: A

preliminary modelAlireza Kashani, John L. Provis, and Jannie S. J. van Deventer 1094

8.3. Gas Fluidisation

Particle dynamics in the fluidized bed: Magnetic particle tracking and discrete particle modellingJohannes Neuwirth, Sergiy Antonyuk, and Stefan Heinrich 1098

xxii

Transitional behavior in gas-fluidized beds

Colin Thornton, Fang Yang, and Jonathan Seville 1102

Contact analysis of different flow regimes in gas fluidization

Q. F. Hou, Z. Y. Zhou, and A. B. Yu 1106

Identification offlow regime in a slurry bubble column by Hilbert-Huang transform analysis

Weiling Li, Wenqi Zhong, Baosheng Jin, and Rui Xiao 1110

Computational study of heat transfer in gas fluidization

Q. F. Hou, Z. Y. Zhou, and A. B. Yu 1114

Discrete particle simulation ofheat transfer in pressurized fluidized bed with immersed cylindersHadi Wahyudi, Kaiwei Chu, and Aibing Yu 1118

SPH-DEM simulations of grain dispersion by liquid injectionMartin Robinson, Stefan Luding, and Marco Ramaioli 1122

Novel multiscale simulation environment for modeling offluidized bed granulationMaksym Dosta and Stefan Heinrich 1126

Discrete element modeling of gas fluidization of fine ellipsoidal particlesJieqing Gan, Zongyan Zhou, Ruiping Zou, and Aibing Yu 1130

8.4. Other Particle-fluid Flows

Fluid coupling in DEM simulation using Darcy's law: Formulation, and verification

M. Goodarzi, C. Y. Kwok, L. G. Tham, and F. Chen 1134

Polygonal particles in fluids

Shi Han Ng and Hans-Georg Matuttis 1138

Fibrous random materials: From microstructure to macroscopic propertiesK. Yazdchi and S. Luding 1142

CFD analysis of the aerosolization of carrier-based dry powder inhaler formulations

Qi (Tony) Zhou, Zhenbo Tong, Patricia Tang, Runyu Yang, and Hak-Kim Chan 1146

Continuous particle manipulation and separation in a hurdle-combined curved microchannel

using DC dielectrophoresis

Ming Li, Shunbo Li, Weihua Li, Weijia Wen, and Gursel Alici 1150

Numerical study of vertical pneumatic conveying: Effect of friction coefficient

K. Li, S. B. Kuang, R. P. Zou, R. H. Pan, and A. B. Yu 1154

Study of raceway in COREX melter gasifier by using three progressive methods

Jun-jie Sun, Zhi-guo Luo, Zhan-xia Di, Chong-lin Liu, Zong-shu Zou, and Yan-Song Shen 1158

xxiii

Numerical study ofjet-induced cratering of a granular bed: Effect of gravityS. B. Kuang, C. Q. LaMarche, J. S. Curtis, and A. B. Yu 1162

Magnetic resonance imaging (MRI) study ofjet height hysteresis in packed beds

Maximilian H. Kohl, Guang Lu, James R. Third, Klaas P. Priissmann, and Christoph R. Miiller 1166

Sensitivity to damping in sand production DEM-CFD coupled simulations

Natalia Climent, Marcos Arroyo, Catherine O'Sullivan, and Antonio Gens 1170

Air effects on subharmonic bifurcations of impact in vertically vibrated granular beds

Z. H. Jiang, H. Han, R. Zhang, and X. R. Li 1174

Numerical simulation of rip-raps with the distinct element method

Livia Mittelbach 1178

Particle scale modelling ofthe multiphase flow in a dense medium cyclone: Effect of medium-to-

coal ratio

Kaiwei Chu, Jiang Chen, Aibing Yu, and Andrew Vince 1182

9. CONTINUUM MODELLING AND SIMULATION

9.1. Granular Rheology

Granular statistical mechanics: Volume-stress phase space, equipartition and equations of state

Raphael Blumenfeld, Joe F. Jordan, and Sam F. Edwards 1186

Non-linear deformation behavior of granular media by elliptic microstructure based model

Kenichi Maeda and Kinya Miura 1190

Modeling of a cohesive granular materials by a multi-scale approachT. K. Nguyen, G. Combe, D. Caillerie, and J. Desrues 1194

Dense annular flows of granular media

Alain de Ryck and Olivier Louisnard 1198

From discrete particles to continuum fields in mixtures

T. Weinhart, S. Luding, and A. R. Thornton 1202

Mechanisms of energy dissipation in saturated granular mass flows

Francesco Federico 1206

Subdiffusive behavior in a two-dimensional granular assembly under shear

J. M. Salazar 1210

Micromechanics of deformation non-coaxiality in granular materials

Xia Li and Hai-Sui Yu 1214

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Continuum stress characteristics inside shear bands

Antoinette Tordesillas, John F. Peters, and Jingyu Shi 1218

A hierarchical model for cross-scale simulation of granular media

Ning Guo and Jidong Zhao 1222

2D cyclic pure shear ofgranular materials, simulations and model

D. Krijgsman and S. Luding 1226

Eddies, mixing and heat transfer in dense granular flows

P. Rognon, T. Miller, and I. Einav 1230

A micromechanical numerical analysis for a triaxial compression of granular materials

V. Magnanimo and L. La Ragione 1234

Evolution of the effective moduli for anisotropic granular materials during pure shear

N. Kumar, O. I. Imole, V. Magnanimo, and S. Luding 1238

Modeling of time-dependent distributions of impact and kinetic energies of particulate systemsJavan D. Tjakra, Nicolas Hudon, Jie Bao, and Runyu Yang 1242

9.2. Process Modelling and Analysis

Modelling ofthe mechanical behaviour oftwo pure PTFE powders during their compaction at

room temperatureCarole Fredy, Rodrigo B. Canto, Nicolas Schmitt, Stephane Roux, and Rene Billardon 1246

Multi-scale modelling of granular avalanches

Krishna Kumar, Kenichi Soga, and Jean-Yves Delenne 1250

A brief investigation into ejection times from a conical mass flow Hopper - Coulomb and conical

model difference

L. A. Fullard and C. E. Davies 1254

Spatial and temporal coarse-graining for DEM analysisC. Labra, J. Y. Ooi, and J. Sun 1258

Energy dissipation of debris flow through pile group obstructions

Minglong Fei, Qicheng Sun, Deyu Zhong, and Gordon G. D. Zhou 1262

Determining key variables of the kinetic theory ofgranular flow using DWS

V. Zivkovic, K. Berry, D. H. Glass, and M. J. Biggs 1266

Numerical investigation of solid mixing in a fluidized bed coating process

Venkatakrishna Kenche, Yuqing Feng, Danyang Ying, Chris Solnordal, Seng Lim,and Peter J. Witt 1270

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Modelling ironmaking blast furnace: Solid flow and thermochemical behaviours

Yansong Shen, Baoyu Guo, Aibing Yu, Sheng Chew, and Peter Austin 1274

Technological pretreatment of the synchysite non-oxidized ore

B. Munkhtsetseg and G. Burmaa 1278

Dusting control of magnesium slag produced by Pidgeon process

Laner Wu, Qixing Yang, Fenglan Han, and Chun Du 1282

Numerical simulations of solid-liquid stirred tank with an improved Intermig impellerHongliang Zhao, Ting'an Zhang, Yan Liu, Zimu Zhang, and Chao Zhang 1286

Discharge of a granular silo as a visco-plastic flow

L. Staron, P.-Y. Lagree, and S. Popinet 1290

Effect of particle fineness on the finely disseminated iron ore for beneflciation

T. S. Qiu, W. X. Zhang, X. H. Fang, and G. K. Gao 1294

Comparison of two methods to study the gas-liquid flows in a continuous slab casting mold

Zhiguo Luo, Chonglin Liu, Tao Zhang, Junjie Sun, Zongshu Zou, and Yansong Shen 1296

Numerical simulations of gas-liquid flow in the gas injection process with mechanical stirringPin Shao, Ting'an Zhang, Yan Liu, Zimu Zhang, and Dongxing Wang 1300

Experimental study of bottom blown oxygen copper smelting process for water model

Dongxing Wang, Yan Liu, Zimu Zhang, Pin Shao, and Ting'an Zhang 1304

Particle scale modelling of the multiphase flow in a dense medium cyclone: Effect of near gravity

material

J. Chen, K. W. Chu, A. B. Yu, A. Vince, G. D. Barnett, and P. J. Barnett 1308

Author Index 1313

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