Parallelization of DEM-LBM Using Domain Decomposition

Jun Li; Xi Lin Cui; Andrew H.C. Chan; John Bridgeman

doi:10.4028/www.scientific.net/AMM.553.531

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Smoothed Particle Hydrodynamics Applied to the Modelling of Landslides
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An Analysis of the Strength of Anisotropic Granular Assemblies via Discrete Methods
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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 553Parallelization of DEM-LBM Using Domain...

Parallelization of DEM-LBM Using Domain Decomposition

Abstract:

The coupled Discrete Element (DEM) - Lattice Boltzmann Method (LBM) often suffers from the high computational cost due to the fine meshes used. The intrinsic parallel nature of DEM-LBM makes it possible to be applied to the analysis of realistic engineering problems using parallel computer. In this paper the domain decomposition is implemented in the validated coupled DEM-LBM code FPS-BHAM and its performance is tested. A parallel efficiency of 0.72 has been achieved by using 32 processors, which shows a very good parallel behaviour of the DEM-LBM. Besides, the feature of ‘pseudo-vector processing capacity’ boosts the parallel behaviour of LBM with domain decomposition.

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Periodical:

Applied Mechanics and Materials (Volume 553)

Pages:

531-536

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.553.531

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Online since:

May 2014

Authors:

Jun Li*, Xi Lin Cui, Andrew H.C. Chan, John Bridgeman

Keywords:

Discrete Element Method, Domain Decomposition, Lattice Boltzmann Method, Parallelisation

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* - Corresponding Author

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