欧拉方程多重网格方法及三维跨声速大迎角流动数值计算

Multigrid Method of Euler Equations and Numerical Calculations of Three-Dimensional Transonic High-Incidence Vortical Flows Around Aircraft

本文给出一种粗、细网格时间步长可调整匹配至最优组合的多重网格方法以获得在最细网格上最大的加速收敛效益，二重网格中节省机时可达３５％。文中的数值方法可用于飞行器跨声速大迎角无粘有旋的涡干扰流场的模拟研究。

A multigrid method is presented with optimized combination of time steps in fine and coarse grids for the best acceleration of convergence in the finest grid, the saved computer time in two-level grid can reach 35 percent. The good agreement with experiments shows that the numerical method in this paper can be used for the simulation of three-dimensional transonic high-incidence inviscid rotational vortical flows around aircraft and that the body-fitted grids orthogonal to boundaries used in present computation are of high quality.