一种复杂外形贴体正交网格生成方法

将翼型保角变换生成网格的方法加以推广。对二维复杂外形生成贴体正交网格，并实现了网格分布的合理控制，从而为翼身组合体及全机提供了一种Ｈ－Ｏ型网格的生成方法。

A Method of Generating Body-Fitted Orthogonal Grid

We, after much thinking over the matter, deem that world's competent aerodynamicists can perform highly satisfactory flow field calculations for complex configuration using Euler and N-S equations, because they know how to form high-quality grid. In a previous paper3], the third and second authors discussed how such grid can be generated for the first time in the open llterature. It is desirable but highly difficult to achieve orthogollality of grid everywhere in the flow field. We know of some aerodynamicists outside China who succeed in applying conformal mapping to generating 3-D grid that is practically useful but still deficlent in completeness of orthogonality. We believe we are the first in China to apply conformal mapping to generating grid that is orthogonal almost everywhere in the flow field. We succeed in gnerating curred - fitted orthogonal 2-D grld for any arbitrary cross-section. But in extending it to the complete aircraft with high sweep back, we can achieve only almost body -fitted orthogonallty for the whole flow field. Eqs. (1) through (5) are used in grid generation. Eq. (1) is the most important, because it is needed for dealing with corners frequently encountered in cross - sections. Our grid-genetating method has been used in aerodynamic calculations of actual aircraft and found to give satisfactory results.