带源项的跨音速粘性流场的数值模拟方法  

Numerical simulation of transonic viscous flow with source term

作　　者：曾卓雄[1] 姜培正[2] 邹葆华[1] 

机构地区：[1]南昌航空工业学院机械系,江西南昌330034 [2]西安交通大学,陕西西安710049

出　　处：《水动力学研究与进展（A辑）》2002年第4期483-488,共6页Chinese Journal of Hydrodynamics

摘　　要：利用AF方法及采用系数分裂技术的全隐式TVD格式对带源项的跨音速粘性流场进行了计算 ,获得了较好的计算效果 ,TVD格式与AF格式相比 ,需以较大的计算量为代价 ,分析了源项对计算收敛的影响 ,源项隐式或显式处理对收敛速度基本无影响 ,但是源项的显式处理会带来时间步长的减小。在此基础上 。The implicit approximate factorization (AF) scheme and the implicit TVD scheme, in which the Jacobian matrix splitting technique was adopted, were used to simulate the transonic flow field with source term. The results show that compared with the AF scheme, the TVD scheme has better perfomances in the shock wave resolution, but at the cost of longer CPU time. The influence of the source terms on the convergence of computation process was analyzed. It was found that the explicit treatment of source terms has no significant influence on the numerical convergence, but makes the time step diminishing. On this basis, the two phase flow in the JPL nozzle was numerically simulated.

关 键 词：TVD格式 AF格式 喷管 跨音速流动 

分 类 号：V211.1[航空宇航科学与技术—航空宇航推进理论与工程]