计算物理 ›› 2001, Vol. 18 ›› Issue (6): 539-543.

• 论文 • 上一篇    下一篇

随机扰动下三维流体界面不稳定性的并行计算

唐维军1, 赵宁2, 李晓林3, 张景琳1, 蔚喜军1   

  1. 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, SUNY at Stony Brook, Stony Brook, 11794, USA
  • 收稿日期:2001-03-14 修回日期:2001-05-18 出版日期:2001-11-25 发布日期:2001-11-25
  • 作者简介:唐维军(1965-),男,湖南湘潭,副研究员,从事计算数学及计算流体力学方面的研究.
  • 基金资助:
    国家自然科学基金重大项目(19932010);惯性约束聚变青年科学基金(青200102);计算物理实验室试点基金;国家自然科学基金(10072028)资助项目

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

TANG Wei-jun1, ZHAO Ning2, LI Xiao-lin3, ZHANG Jing-lin1, YU Xi-jun1   

  1. 1. Laboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics, Beijing 100088, P R China;
    2. Nanjing University of Aeronautics and Astronautics Nanjing 210016, P R China;
    3. Department of Applied Mathematics and Statistics, SUNY at Stony Brook, Stony Brook, 11794, USA
  • Received:2001-03-14 Revised:2001-05-18 Online:2001-11-25 Published:2001-11-25

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.并进行了数值计算.

关键词: 界面不稳定性, Level Set方法, TVD格式, Ghost方法, 并行计算

Abstract: 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.

Key words: parallel algorithm, random perturbation, Level Set method, Ghost method

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