摘要
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黎曼变量表示的欧拉方程组,再用二点二步迎风格式离散求解。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 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.
出处
《空气动力学学报》
CSCD
北大核心
1993年第4期380-388,共9页
Acta Aerodynamica Sinica
关键词
欧拉方程
差分法
超音速流动
钝体
Euler equation, finite different method, supersonic flow, blunt body.
