中文摘要：

用沉浸边界法对气固两相流进行全分辨率直接数值模拟，介绍并行算法及其并行效率。考察球形颗粒的空间分辨率等对计算精度的影响，对颗粒雷诺数Rep=1～150，颗粒直径与计算网格比大于20时，该并行算法获得的计算精度较高。

英文摘要：

We employ the immersed boundary method to carry out the fully resolved direct numerical simulation of the gas-solid two-phase flows, and introduce the parallel algorithm and its parallel efficiency as well. We also investigate the influence of spatial resolution of spherical particle on the calculation precision. The parallel algorithm achieves higher calculation accuracy when the particle Reynolds number Rep=1~150, and the ratio of the particle diameter and computation grid is greater than 20.