2026-10-14T13:45:12Z https://www.scidb.cn/oai

10.57760/sciencedb.Partic.00088 2024-10-21T10:02:22Z

2024-10-21 GPU accelerated MFiX-DEM simulations of granular and multiphase flows doi:10.57760/sciencedb.partic.00088 en In this research, a Graphical Processing Unit (GPU) accelerated Discrete Element Method (DEM) code was developed and coupled with the Computational Fluid Dynamic (CFD) software MFiX to simulate granular and multiphase flows. The Fortran-based CFD solver was coupled with CUDA/C++ based DEM solver through inter-process pipes. The speedup to CPU is about 130 to 243 folds in the simulation of particle packings. In fluidized bed simulations, the DEM computation time is reduced from 91% to 17% with a speedup of 78 folds. The simulation of Geldart A particle fluidization revealed a similar level of importance of both fluid and particle coarse-graining. The filtered drag derived from the two-fluid model is suitable for Euler-Lagrangian simulations with both fluid and particle coarse-graining. It overcorrects the influence of sub-grid structures if used for simulations with only fluid coarse-graining. GPU; MFIX; DEM; Drag; Fluidization Liqiang Lu PUBLIC https://creativecommons.org/licenses/by/4.0/ dataset http://www.doi.org/https://doi.org/10.1016/j.partic.2021.08.001 Science Data Bank