并行重叠/变形混合网格生成技术及其应用  

Dynamic Hybrid Mesh Generator Coupled with Overset and Deformation in Parallel Environment

作　　者：常兴华[1,2] 王年华[1,2] 马戎[2] 田润雨 张来平[1,2] CHANG Xing-hua;WANG Nian-hua;MA Rong;TIAN Run-yu;ZHANG Lai-ping(State Key Laboratory of Aerodynamics,China Aerodynamics Research and Development Center,Mianyang 621000,China;Computational Aerodynamics Institute,China Aerodynamics Research and Development Center,Mianyang 621000,China;Hypervelocity Aerodynamics Institute,China Aerodynamics Research and Development Center,Mianyang 621000,China)

机构地区：[1]中国空气动力研究与发展中心空气动力学国家重点实验室,四川绵阳621000 [2]中国空气动力研究与发展中心计算空气动力研究所,四川绵阳621000 [3]中国空气动力研究与发展中心超高速空气动力研究所,四川绵阳621000

出　　处：《气体物理》2019年第6期12-21,共10页Physics of Gases

基　　金：国家重点研发计划(2016YFB0200701);国家自然科学基金(11532016,11672324)

摘　　要：为了适用于柔性变形、相对运动等复杂动边界问题,建立了并行环境下重叠和变形相结合的动态混合网格生成技术.通过计算区域分解以及分布式并行实现了重叠和变形技术的结合,其中重叠网格采用了并行化的隐式装配方法,并发展了两种并行化查询策略.变形网格则采用了并行化的径向基函数(RBF)插值方法.并行化动态网格生成方法大幅提高了动态网格生成效率,有利于处理大规模的动边界问题.在此基础上,发展了基于变形/重叠动态混合网格的流动/运动/控制一体化数值模拟方法,进一步改进了耦合模拟软件平台——HyperFLOW.典型应用算例证明了该动态混合网格技术及一体化算法的实用性.A deforming/overset coupled hybrid moving grid generation method was developed in parallel environment to deal with complex engineering problems of both boundary deformation and relative movement.The coupled method is based on a domain decomposition strategy and distributed parallel process.The parallel implicit-hole-cutting method based on the minimum distance to wall is adopted,and two parallel donor cell searching methods have been developed.The interpolation method based on parallel radial basis function(RBF)is adopted for mesh deformation.Based on the coupled hybrid moving grids,the numerical virtual flight solver,HyperFLOW,was improved.The coupled simulation system integrates the parallel unsteady RANS solver on the deforming/overset moving grids,six degrees of freedom(6DOF)motion solver,and flight control system.Some typical applications demonstrate the capability of present method.

关 键 词：重叠网格 变形网格 并行动态网格生成 数值虚拟飞行 耦合算法 

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]