超声速平面钝体流动的快速解法

本文介绍了一种平面流动的快速欧拉方程解法。该方法将原参数非定常欧拉方程组重新组合成以广义称曼变量表示的欧拉方程组，再用二点二步迎风格式离散解。针对钝体流动，本文先建立了动网格下的方程，构造了动网格下的算法。提出了一种简单的激波处理方法。计算结果表明，该方法速度快，稳定性好，对初场不敏感。

A Fast Solver for Supersonic Planar Fluid Flow Around Blunt Body

A fast Euler Solver for planar flows is developed in this paper.Euler Equations of generalized Riemann variable are derived from unsteady primitive variable Euler equations and solved by using two- a point-two-step upwind finite difference method. In order to deal with subsonic-supersonic flow around blunt bodies at supersonic speads. a set of equations used for moving grids is established, the scheme constructed. A new technique is given for the treatment of the moving shock boundary. The result shows that this method is fast, not sensitive to primary flow and has a good stability.