论文部分内容阅读
采用弱耦合对角化点隐式方法的ＭａｃＣｏｒｍａｃｋ格式，求解喷管的粘性化学反应流动，解决了控制方程组的刚性问题，又大大减少了常规点隐式方法中求逆矩阵的大量工作。对液氢液氧火箭发动机，采用６种组分、８个反应有限速率的化学反应模型和Ｂａｌｄｗｉｎ－Ｌｏｍａｘ代数湍流模型，得到流场参数在喷管中的分布。计算结果表明，采用对角化点隐式方法求解化学反应喷管粘性流动能提高计算效率。
The MacCormack scheme of weakly coupled diagonalization point implicit method is used to solve the viscous flow of nozzle, which solves the rigid problem of governing equations and greatly reduces the work of inverse matrix in conventional point implicit method. The liquid hydrogen oxygen rocket engine, the use of six components, eight reaction rate-limited chemical reaction model and Baldwin-Lomax algebraic turbulence model, the flow field parameters in the nozzle distribution. The calculation results show that the diagonalization point implicit method can solve the chemical reaction nozzle viscous flow and improve the computational efficiency.