热化学非平衡喷管流场的数值研究

NUMERICAL SIMULATION OF THERMOCHEMICAL NONEQUILIBRIUM NOZZLE FLOW

关键词:  时间相关  喷管气流  气动热化学  流动分布  数值计算

Key words:  Time dependence  Nozzle flow  Aero thermochemistry  Flow distribution  Numerical calculation

摘要:

从非定常的基本方程出发，采用时间相关法，利用时间预处理的ＭａｃＣｏｒｍａｃｋ格式对空气为实验气体的７组元热化学非平衡一维喷管流场进行了数值计算，并分析了热化学非平衡对流场的影响。结果表明，对于一些实际应用的喷管条件，热化学非平衡具有较为显著的影响。

Abstract:

The qusi one dimensional thermochemical nonequilibrium nozzle flow of seven species gas was calculated numerically by using a time dependent analysisThe time preconditioned explicit MacCormack scheme was used for the numerical solutionIt is shown that for some practical nozzle conditions,the nonequilibrium effects have significant influence on the nozzle flow properties