Journal of the Society of Powder Technology, Japan
Online ISSN : 1883-7239
Print ISSN : 0386-6157
ISSN-L : 0386-6157
Technical Note
Large-scale DEM Simulations Using Non-spherical Particles on GPU
Seiya WatanabeTakayuki AokiSatori Tsuzuki
Author information
JOURNAL RESTRICTED ACCESS

2015 Volume 52 Issue 12 Pages 730-734

Details
Abstract
It is rather costly to simulate granular phenomena by using Discrete Element Method with non-spherical particles. In this article, non-spherical particles were modeled by collectives of spherical particles rigidly connected. We proposean efficient neighbor-particle searching method and an algorithm to improve the computational performance for GPU computing.We demonstrate the difference of the foot stamp in the case of 405,000 tetrahedron-shaped particles from simply spherical particles. The edge of footprint with tetrahedron-shaped particles is clearer due to the enhanced shear frictions of interlocked particles. Confirming the efficacy of GPU acceleration, we perform a large-scale agitation simulation using 300,000 cubic objects on a NVIDIA Tesla K20X and the simulation for 800,000 time steps has completed within 14 hours.
Content from these authors
© 2015 The Society of Powder Technology, Japan
Previous article
feedback
Top