某型双立尾战斗机的网格生成及流场解

Grid generation and flow field solution of a twin tail fighter

以某型双立尾战斗机为例，给出了实际复杂型号飞行器结构网格生成的一种分块方案及实现过程。用一种矢性三次多项式插值的方法生成相邻块公共交界面的网格，用求解椭圆型方程的方法生成块内空间网格。在所生成的双立尾战斗机分块结构网格中分区求解Ｅｕｌｅｒ方程，获得了合理的全机气动力系数。

A multiblock structured grid generation system for complex practical aircrafts is presented and applied in the grid generation of a twin tail fighter. A vectorized polynomial of degree 3 is used to generate grids on the interfaces of adjacent blocks. The volume grid in each block is generated by solving elliptic partial differential equations. Euler equations are solved in the generated grid of the twin tail fighter and the computed results of the aerodynamic coefficients of the complete aircraft, the wing surface pressure and the vortical flow field are reasonable.