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采用高分辨率数值方法和算子分裂技术研究了稀颗粒群假定下粉尘气体激波通过管道直拐角处时的绕射和反射，得到不同时刻的复杂流场结构．通过比较，找到了粉尘气体激波和纯气体激波传播特性的基本差异，讨论了颗粒的不同物理性质对波后流场特性的影响．
High-resolution numerical method and operator splitting technique are used to study the diffraction and reflection of dust gas shock waves at the straight corner of the pipeline under the assumption of the lean particle swarm optimization. The complex flow field structure at different moments is obtained. By comparison, the basic differences between the propagation characteristics of shock wave and pure gas shock wave were found, and the influence of different physical properties of particle on the wave field characteristics was discussed.