Subject: Discrete Element Modeling at the 5th International Conference for Conveying and Handling of Particulate Solids (CHoPS-05), 27-31 August 2006, Sorrento, Italy

Dear Colleague,

Discrete Element Modeling (DEM) is currently been used extensively in bulk solids handling research. Therefore the EFCE Working Party Mechanics of Particulate Solids (WPMPS) has joined forces with ChoPS-05 to make DEM one special focus during the conference in Sorrento. ChoPS-05 will have two regular sessions, a poster session and a plenary lecture by Prof. Stefan Luding, TU Delft devoted to DEM. In addition WPMPS will run a workshop on DEM co-chaired by Profs. S. Luding (Delft), J. Ooi (Edinburgh) and U. Tuzun (Surrey) during the conference. Both the plenary lecture and the workshop will take place on Wednesday August 30th, 2006. A preliminary list of presentations and posters is enclosed.

The WPMPS workshop endeavors to increase the acceptance of DEM-codes for simulation of bulk solids behavior. This requires the codes to be validated, which in turn needs carefully selected problems with a good experimental database for test runs. The workshop is intended to help identify a suitable set of problems for the quantitative validation and verification of DEM type models in the area of bulk solids handling. The workshop will commence with introductory presentations on the issues and methods relating to validation currently used in chemical, mining and agricultural engineering and physics research, as well as in industry. This will be followed by a discussion session by all workshop participants.

The workshop shall produce a framework for engagement between academic researchers, professional software companies and potential industrial beneficiaries of DEM numerical simulations that will identify areas that need significant further development both in terms of computational methodologies as well as the experimental validation procedures. It is hoped that in the longer term, the group of researchers brought together for the event will form the nucleus of a wider project formation aimed at setting the European/International standards of "best practice" in DEM Simulation software development and implementation in a broad range of industry sectors.

The EFCE Working Party Mechanics of Particulate Solids invites the scientific community to join the Workshop on DEM simulation of bulk solids behavior and would encourage participation in ChoPS-05. The workshop chairmen welcome all further enquiries in connection with attendance at the DEM workshop.

You can find more information on the congress at http://www.ortra.com/solids/. Information about the EFCE Working Party Mechanics of Particulate Solids is available at http://www.efce.info/wpmps.html

Yours Sincerely

Hermann Feise

Excerpts from the

PRELIMINARY PROGRAM

5th International Conference for Conveying and Handling of Particulate Solids

related to Discrete Element Modeling

SESSION D5: DEM-I

Tuesday, 29 AUG 2006, 13:20 – 15:00

Post-Simulation Analyses of Large Datasets Using Wavelets to Probe Dynamic Evolution of Stress, Strain-Rate and Voidage Coupling in Granular Media

U. Tuzun, University of Surrey, UK

Stress Redistribution Upon Silo Unloading – Experimental and DEM Simulation

J. Sykut, M. Molenda & J. Horabik, Polish Academy of Sciences, Poland

Modelling Glued Particle Contacts with DEM

L. Brendel, University Duisburg-Essen, Germany

Shear Dynamics of Ultrafine Cohesive Powders: Simulations and Experiments

R. Tykhoniuk & J. Tomas, Otto-von-Guericke University of Magdeburg, Germany

SESSION D6: DEM-II

Tuesday, 29 AUG 2006, 16:20 – 18:00

Towards a Better Understanding of Granular Material Processes: The Coupling of a Computational Fluid Dynamics Framework with Micro-Mechanical Models

M.K. Patel1, N. Christakis2, P. Chapelle3 & M. Cross4, 1University of Greenwich, UK. 2University of Crete, Greece. 3Ecole des Mines, Parc de Saurupt, France. 4University of Wales, UK

Large Scale DEM computation – Expectations and Recent Results

E. Tijskens, B. Van Besien, S. Vandewalle & H. Ramon, Katholieke Universiteit Leuven, Belgium

On the Numerical Calibration of Discrete Element Models for the Simulation of Bulk Solids

T. Gröger1 & A. Katterfeld2, 1Itasca Consultants GmbH, Germany, 2University of Magdeburg, Germany

Assessment of Mill Lifter Bar Deflection Measurements Using Wavelets and Discrete Element Methods

K.T. Tano1 & B.I. Pålsson2, 1LKAB, Research and Development, Sweden. 2Luleå University of Technology, Sweden

POSTER SESSION 2; DEM

Tuesday, 29 AUG 2006, 15:00 – 15:50

Modifications on a Transition Chute for Dust Reduction aided by Discrete Element Simulations

T. Gröger1 & P. Kisters2, 1Itasca Consultants GmbH, Germany, 2AUMUND Fördererbau, Germany

Breakage Behaviour of Spherical Granules by Impact: Experimental Study and DEM Simulation

S. Antonyuk, J. Tomas, S. Heinrich & L. Mörl, Otto-von-Guericke-University of Magdeburg, Germany

Recent Results of Experimentation and DEM Modeling of Centrifugal Fertilizer Spreading

E. Tijskens1, P. Van Liedekerke1, E. Piron2, J. Van Geyte3, F. Cointault2 & H. Ramon1, 1Katholieke Universiteit Leuven, Belgium. 2Cemagref, France. 3Centre of Agricultural Research, Belgium

Discrete Element Simulation of Direct Shear Test with Experimental Validation

J. Haertl & J.Y. Ooi, University of Edinburgh, UK

PLENARY 2

Wednesday, 30 AUG 2006, 09:20 – 10:10

About Particulate Solids Modeling with Discrete Element Methods

S. Luding, TU Delft, the Netherlands

Wednesday, 30 AUG 2006

10:40 – 12:20

13:20 – 15:00WORKSHOP D7: DEM

CHAIRS: S. Luding, TU Delft, The Netherlands

J.Y. Ooi, University of Edinburgh, UK

U. Tuzun, University of Surrey, UK

EFCE Working Party on Mechanics of Particulate Solids

DEM is currently been used extensively in bulk solids handling research. However, for wider acceptance the DEM-codes for simulation of bulk solids behavior needs to be validated. This requires carefully selected problems with a good experimental database for test runs. The workshop is intended to help identify a suitable set of problems for the quantitative validation and verification of DEM type models in the area of bulk solids handling. The workshop will commence with introductory presentations on the issues and methods relating to validation currently used in chemical, mining and agricultural engineering and physics research, as well as in industry. This will be followed by a discussion session by all workshop participants.

The workshop shall produce a framework for engagement between academic researchers, professional software companies and potential industrial beneficiaries of DEM numerical simulations that will identify areas that need significant further development both in terms of computational methodologies as well as the experimental validation procedures. It is hoped that in the longer term, the group of researchers brought together for the event will form the nucleus of a wider project formation aimed at setting the European/International standards of "best practice" in DEM Simulation software development and implementation in a broad range of industry sectors ■