基于动态结构重叠网格的三维外挂物分离的数值模拟

在动态结构重叠网格技术的基础上,提出了"相邻格点搜索法"来进行洞边界的确定和贡献单元的搜寻,将传统的三维搜索转化为准一维搜索,大幅度提高了搜索效率,并对外挂物分离的非定常流场进行了数值模拟,计算结果与试验数据符合良好,说明本文的外挂物分离数值模拟方法是正确的、高效的,在工程实际应用中是可行的.

Three-Dimensional Store Separation Simulation Using Moving Structured Overlapping Grid Technique

Based on the moving structured overset grid technique,the method of neighbor-to-neighbor cell-vertex search is used for hole-cutting and grid interface interpolation of overset grids,which turns a three-dimensional or two-dimensional search into a quasi-linear search,and it is efficient.The flow field of store separated from wing is simulated using Euler equations,and the result agrees well with the wind tunnel data,which proves the method used in this paper is correct,efficient and feasible in project appl...