复杂外形网格生成技术及应用

Grid Generation Technique of Complex Configurations and its Applications

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Ｈｉｌｇｅｎｓｔｏｃｋ方法修正源项，求解椭圆型方程生成块内空间网格，使网格线与边界面夹角、与边界面间距控制为期望的值．在所生成的双立尾战斗机分块结构网格中求解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 aircraft is presented and applied in the grid generation of a twin tail fighter. A vectorized polynomial of degree 3 is used to generate grid on the interface of adjacent blocks. The volume grid in each block is generated by solving elliptic partial differential equations with source terms corrected by 3 d Hilgenstock method to control the grid line angle (orthogonality) to boundaries and first layer grid point spacings off boundaries to expected values. 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.