Parallel Algorithms for Particle-Turbulence Two-Way Interactions in a Weakly Compressible Jet by Direct Numerical Simulation

摘要

SPMD parallel computation of a weakly compressible particle-laden jet flow is presented in our paper. The parallel computation is conducted with an explicit finite difference method by the direct numerical method on an IBM Linux Cluster. The conservation equations, boundary conditions, domain decomposition method, and the solving processes are carefully presented. Two-way coupled forces are used to consider the effect of the interaction between particles and fluid. The speedup factor and parallel computational efficiency are presented with different domain decomposition methods. The numerical simulation results are compared carefully with experimental data. To some extent, our DNS code is useful for large-scale particle-laden turbulent flow.