飞行器外挂投放数值模拟  

Store separation simulation using overset unstructured grid

作　　者：唐志共[1] 李彬[2] 郑鸣[2] 邓有奇[2] 

机构地区：[1]西北工业大学,陕西西安710072 [2]中国空气动力研究与发展中心计算所,四川绵阳621000

出　　处：《空气动力学学报》2009年第5期592-596,共5页Acta Aerodynamica Sinica

摘　　要：采用非结构重叠网格Euler方程的CFD方法数值模拟了外挂投放。该方法在重叠网格"挖洞"时,以"离壁面距离"为挖洞判据;在建立重叠区域插值关系时,对Neighbor to Neighbor(N2N)和Alternating Digital Tree(ADT)两种方法的效率进行了比较。采用机翼/挂架/带舵外挂物模型开展了验证计算。在此基础上,完成了某飞行器外挂投放的初步计算。An overset unstructured grid using the three dimensional Euler equations is applied to simulate the store separation problems. The distance to wails criterion is used in the automatic hole-cutting procedure. The searching efficiency of the Neighbor to Neighbor （N2N）and Alternating Digital Tree（ADT）are compared as well during the procedure. This method is used for computing the trajectories of the Wing/Pylon/Finned-Store configuration, and compared with the experimental data. And a complex separation problem is solved using this method.

关 键 词：EULER方程 非结构重叠网格 外挂投放 

分 类 号：V211.3[航空宇航科学与技术—航空宇航推进理论与工程]