激波绕尖劈障碍物运动粘性流场的数值模拟研究  

Numerical simulation study of the unsteady viscous field of shock wave over a wedge

作　　者：朱军政[1] 范西俊[1] 

机构地区：[1]浙江大学力学系

出　　处：《浙江大学学报（自然科学版）》1997年第4期432-441,共10页

摘　　要：本文以数值方法研究了运动激波绕射的非定常粘性流的发展过程．计算中采用二阶ＴＶＤ差分格式求解二维非定常薄层Ｎａｖｉｏｒ－Ｓｔｏｋｅｓ方程，得到了清晰的流场结构图谱，分析了产生局部粘性分离的现象．研究结果表明，本文的方法可以很好地描述激波绕射的复杂流动，对流场间断有较高的捕获能力。A secord order difference with high resolution TVD scheme is used to solve the thin-layer Navior-Stodes equations for simulating the unsteady flow field of shock wave over a wedge. The computation results of normal shock wave impinging on the wedge are shown that three types of Mach reflection phenomenon include single Mach reflection (SMR), complex Mach reflection (CMR) or transient Mach reflection (TMR), double Mach reflection (DMR) are captured. The given density, pressure, speed, energy contours are shown clearly the developed procedure of the unsteady flow field and good agree with experiment results.

关 键 词：非定常粘性流动 激波反射 TVD格式 数值模拟 

分 类 号：O354.5[理学—流体力学]