【摘要】 基于Delaunay图映射的动网格方法是一种快速、鲁棒的新型方法,其具有无需迭代、效率高、适用于任意拓扑结构的网格等特点。在分析影响Delaunay图映射方法变形能力主要因素的基础上,对Delaunay图映射方法进行了改进,通过在Delaunay图中增加辅助点,并结合弹簧原理动网格方法,消除了Delaunay图在大变形时出现交叉的问题。通过三维翼身组合体大变形算例验证了发展的混合动网格方法的可靠性和处理气弹问题时的计算效率。更多还原

【Abstract】 Dynamic grid based on Delaunay map is a fast and robust grid deformation algorithm which is non-iterative,efficient,topological flexible.Based on the analysis of the primary factor effect the Delaunay map′s deform capability,an improved the Delaunay map method is present.By adding assistant points and using spring method,the intersection of Delaunay map element can be avoided.One case is used to validate the hybrid dynamic grid method.All the results show that the hybrid methods proposed in this article are robust and efficient in simulating aeroelastic problems.更多还原