摘要
本文用ＮＮＤ格式求解了化学非平衡流场，利用点隐式处理组分连续方程的刚性；采用全流场激波捕捉办法和特征理论，成功地进行了物面边界条件的处理，模拟了高马赫数来流条件下的含强激波流场。化学反应采用了五组分五反应模型，建立起来的三维流场计算程序可用于复杂外形化学非平衡无粘流场的数值模拟。
The three-dimensional chemically nonequilibrium inviscid flowfield has been simulated with NND scheme in this paper. Chemical source terms in species continual equations are evaluated in a point implicit manner. T he shock capturing technique and characteristic relations are used successfull in the treatment of the boundary on body surface and the capturing of strong shock wave in flowfield. The gas medium considered is air consisting of five chemical species that are involved in five chemical reactions. The numerical results show that the code developed here can be used in the numerical simulation of chemical nonequilibrium inviscid flow around complex configuration of Yehicle.
出处
《空气动力学学报》
CSCD
北大核心
1996年第2期127-133,共7页
Acta Aerodynamica Sinica
关键词
化学非平衡
数值模拟
NND格式
欧拉方程
chemical nonequilibrium, Euler equations, numerical simulation. NND scheme.
