Collar网格的生成及其在嵌合体技术中的应用

本文应用双曲型方程生成表面网格和空间网格的方法成生Ｃｏｌｌａｒ网格，并将Ｃｏｌｌａｒ网格应用到嵌合体技术中，在保证计算网格的生成方便快捷而且网格质量高的前提下，有效地解决了为物体结合部的内外边界点寻找插值单元的问题。经数值计算验证，用本文方法求解有结合部的复杂组合体绕流可以得到精确可靠的数值结果。

Generation of the collar grid used in embedding technique

The collar grids obtained using hyperbolic partial equations are used in embedding technique to solve the problem of finding interpolating cells of the internal and external boundary points near the joint regions,which can not be well coped with in previous works.With diffirent boundary plane generated along diffirent intersection surface,the collar grid method can ensure to generate high quality grids and to provide real interpolating cells for the boundary points in the blanking regions.The computational results of aircraft show that the current developed embedding technique can more accurately predict the flow over complex configuration with intersecting surfaces.