用改进的 SIMPLE 方法求解喷管流动

SOLVING VISCOUS FLOW IN NOZZLE USING IMPROVED SIMPLE ALGORITHM

关键词:  可压缩流  粘性流  喷管气流  数值计算

Key words:  Compressible flow  Viscous flow  Nozzle flow  Numerical calculation

摘要:

应用ＳＩＭＰＬＥ方法求解全速度流动问题，这一方法是以速度分量、压力和温度作为原始变量，密度通过状态方程求得，压力对密度的影响隐式处理。利用此方法求解了粘性喷管流动，并与试验结果进行了比较，吻合较好。

Abstract:

The SIMPLE method has been extended to calculate the flow at all speedsThe primary variables are the cartesion velocity components,the pressure and the temperatureThe density is linked to the pressure via an equation of stateThe influence of the pressure on the density in the case of compressible flows is implicitly in corporated into the extended SIMPLE algorithmThe method is applied in a viscous nozzle flowThe results are in accord with the experimental data of Mason