关键词: 复杂外形, 非结构网格, 附面层网格, 网格生成自动化

Abstract: With the rapid development of Computational Fluid Dynamics, the problems to be solved with CFD are becoming more and more complex. However, the traditional unified body-fitted grids structure has been unable to meet the needs of development of CFD. Unstructured mesh appears and attracts the CFD researchers’ attention with new features by breaking the habit of structured thinking. And the unstructured grid with boundary layer is always a difficult problem in unstructured grid generation. The paper studies the grid generating method for unstructured tetrahedral, at the same time, combined with the technological advantages of Spider software platform structure grid parameters of boundary layer propulsion, based on it, unstructured mesh generation module UGCS development is done. The large number of examples of grid generation results, mainly grid quality and numerical calculation, fully verify the reliability and the robustness of algorithm.

Key words: complicated surface, unstructured mesh, boundary layer mesh, mesh generation automation