Parallel Computing of Discrete Particle Flows Based on Information Communication Model of FLUENT Platform
Ren Li-b · Journal of Chemical Engineering of Chinese Universities · 2015
This paper presents parallel simulation techniques for the pseudo three-dimensional CFD-DEM model based on the MPICH2 platform of FLUENT software. This parallel model has good scalability with the increase of CPU numbers, and parallel computing can be speeded up with the increase of compute nodes. The convergence of the governing equations was improved by constructing a void fraction scalar field and reorganizing the gas-phase governing equations, which followed a volume-averaged form of the two-fluid model. The parallel solution of the gas-phase governing equations and the DEM were implemented by a standard module and UDF(User-Defined Function), respectively. In the DEM computing, the particle message passing between neighboring subdomains was completed by message-passing macros. The parallel CFD-DEM model was applied in gas-solid two-phase flow simulation on unstructured meshes and the results are in good agreement with related experiments, which shows that this model can be applied in studying dense particulate flows.