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Parallel coupling strategy for multi-physics applications in eXtended Discrete Element Method
Besseron, Xavier; Rousset, Alban; Mainassara Chekaraou, Abdoul Wahid et al.
2020HPC Knowledge Meeting '20
 

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Abstract :
[en] Multi-physics problems containing discrete particles interacting with fluid phases are widely used industry for example in biomass combustion on a moving grate, particle sedimentation, iron production within a blast furnace, and selective laser melting for additive manufacturing. The eXtended Discrete Element Method (XDEM) uses a coupled Eulerian-Lagrangian approach to simulate these complex phenomena, and relies on the Discrete Element Method (DEM) to model the particle phase and Computational Fluid Dynamics (CFD) for the fluid phases, solved respectively with XDEM and OpenFOAM. However, such simulations are very computationally intensive. Additionally, because the DEM particles move within the CFD phases, a 3D volume coupling is required, hence it represents an important amount of data to be exchanged. This volume of communication can have a considerable impact on the performance of the parallel execution. To address this issue, XDEM has proposed a coupling strategy relying on a co-located partitioning. This approach coordinates the domain decomposition of the two independent solvers, XDEM and OpenFOAM, to impose some co-location constraints and reduce the overhead due to the coupling data exchange. This strategy for the parallel coupling of CFD-DEM has been evaluated to perform large scale simulations of debris within a dam break flow.
Disciplines :
Computer science
Author, co-author :
Besseron, Xavier  ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit
Rousset, Alban ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit
Mainassara Chekaraou, Abdoul Wahid ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit
Peters, Bernhard ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit
External co-authors :
no
Language :
English
Title :
Parallel coupling strategy for multi-physics applications in eXtended Discrete Element Method
Publication date :
18 June 2020
Event name :
HPC Knowledge Meeting '20
Event place :
Barcelona, Spain
Event date :
18-19/06/2020
Audience :
International
Focus Area :
Computational Sciences
Name of the research project :
Luxdem.parallel_CFD-DEM
Available on ORBilu :
since 29 September 2020

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