粉尘气体激波在管道直拐角处的绕射和反射

Diffraction and Reflection of Shock Waves in a Dusty Gas through a Rectangular Bend

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．

By using the high reesolution numerical method with an operator-splitting technique, the diffraction and reflection of a planar shock wave in a dusty gas through a rectangular bend are studied under the assumption of dilute-particle systems. The complicated flow structures at different in-stunts are obtained. The basic differences of shock propagation features between a pure gas and a dusty gas are found and the effects of physical properties of particles on the post-shock flow field are discussed.