随机扰动下三维流体界面不稳定性的并行计算  

PARALLEL COMPUTATION OF FLUID INTERFACE INSTABILITY IN THREE DIMENTION WITH RANDOM PERTURBATION

作　　者：唐维军[1] 赵宁[2] 李晓林 张景琳[1] 蔚喜军[1] 

机构地区：[1]北京应用物理与计算数学研究所计算物理实验室,北京100088 [2]南京航空航天大学空气动力学系,江苏南京210016 [3]Department of Applied Mathematics and Statistics

出　　处：《计算物理》2001年第6期539-543,共5页Chinese Journal of Computational Physics

基　　金：国家自然科学基金重大项目 (1993 2 0 10 );惯性约束聚变青年科学基金 (青 2 0 0 1 0 2 );计算物理实验室试点基金;国家自然科学基金 (10 0 72 0 2 8)资助项目

摘　　要：对三维流体界面不稳定性的数值模拟引进了新的数值计算方法 ,并在MPI并行计算环境下进行了数值模拟 .利用LevelSet方法确定界面位置 ,零水平集对应界面位置 .对应离散LevelSet方程和界面两侧的两套Euler方程 ,借助于Ghost网格方法来完成离散 .对最后网格点上的两套状态量的辨认依赖于该点的LevelSet值的符号 .Computation of three dimensional fluid interface instability with random perturbation is performed on a 8 CPU personal parallel computer system.The parallel computation platform is a message passage interface(MPI).A second order TVD scheme with Ghost method is applied with a fully parallel algorithm to the 3D Euler equations.Level Set function is used to track the motion of a fluid interface in an Eulerian framework.Buffer zone and data communication are discussed.The number of computation meshes is about 1 million.Bubble evolution with random perturbation in Rayleigh Taylor instability is obtained by numerical simulation.

关 键 词：界面不稳定性 LEVEL SET方法 Ghost方法 并行计算 随机扰动 三维流体 网格 

分 类 号：O35[理学—流体力学] O246[理学—力学]