粉尘气体中平面激波在固壁反射的高分辨率数值模拟

Numerical Simulation of High Resolution of Shock Wave Reflection from a Solid Wall in a Dusty Gas

本文在稀颗粒群双流体简化模型下，采用算子分裂技术，综合应用高分辨率ＧＲＰ格式，全二阶精度的ＦＣＴ格式及预估校正格式，取三种不同粒相固壁边界条件，数值模拟了粉尘气体激波在刚性固壁上的正反射。确证了由理想平衡混合气体分析所预示的三类激波反射结构，给出了非平衡反时时波后流场的松弛特性，并评价了不同的粒相固壁边界条件假定的适用性。

In this paper,based on the two-fluid model of dilute suspensions,the shock wave reflection from a solid wall in a dusty gas has been investigated by using the operator-splitting method,GRP schemewith high resolution,the second-order FCT scheme and predictor-correc-tor algorithm.Three kinds of numerical boundary conditions on the wall for the solid phase are used,The results demonstrate that there are three types of shock reflection as analyzed for an idealized equilibrium gas.The relaxation properties of two phases behind the shock wave for nonequilib-rium reflection are given,and the availability of the different boundary conditions on the wall for particles is appreciated.