首页 | 本学科首页   官方微博 | 高级检索  
     

Richtmyer-Meshkov失稳的数值模拟
引用本文:程军波,傅德薰,马延文. Richtmyer-Meshkov失稳的数值模拟[J]. 计算物理, 2001, 18(5): 390-396
作者姓名:程军波  傅德薰  马延文
作者单位:1. LNM, 中国科学院力学所, 北京 100080;2. LHD, 中国科学院力学所, 北京 100080
摘    要:利用五阶迎风紧致差分格式加群速度控制方法对激波与轻气体柱形界面的干扰问题进行直接数值模拟,并研究了涡量的产生及其发展和界面的变形,分析了柱形界面的失稳过程,得知在线性发展阶段,重气体以恒定的速度进入到轻气体中,并形成尖钉结构;在非线性发展阶段,在尖钉头部的两侧形成一对旋转方向相反的涡结构.同时证实了激波与界面的相互干扰有助于增加混合.并将所得的数值解与实验结果进行了比较.

关 键 词:五阶迎风紧致差分格式  群速度控制格式  Richtmyer-Meshkov失稳  轻气体柱形界面  斜压效应  
文章编号:1001-246X(2001)05-0390-07
收稿时间:2001-02-21
修稿时间:2001-02-21

NUMERICAL SIMULATION OF RICHTMYER-MESHKOV INSTABILITY OF DENSITY-STRATIFIEDINTERFACE OF LIGHT-GAS CYLINDER
CHENG Jun-bo,FU De-xun,MA Yan-wen. NUMERICAL SIMULATION OF RICHTMYER-MESHKOV INSTABILITY OF DENSITY-STRATIFIEDINTERFACE OF LIGHT-GAS CYLINDER[J]. Chinese Journal of Computational Physics, 2001, 18(5): 390-396
Authors:CHENG Jun-bo  FU De-xun  MA Yan-wen
Affiliation:1. LNM, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, P R China;2. LHD, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, P R China
Abstract:An approach combining the fifth Upwind Compact Difference Scheme and Group Velocity Control is applied to simulate directly the interaction of shocks and the density stratified interface of light-gas cylinder.Some research about the generation and development of vorticity and the distortion of edge of cylinder is done.The instability of cylinder density-interface is analyzed.Main character of the linear developing phase is that the gas of higher density goes into the one of lower denstiy at a constant velocity and the spike structure is formed and the character of the nonlinear developing phase is that a pair of vortex structures rotating adversely are formed on both sides of the top of the spike.The numerical solution accords with the experiment.
Keywords:fifth upwind compact difference scheme  group velocity control  Richtmyer-Meshkov instability  density-stratified interface of light-gas cylinder  baroclinic effect  
本文献已被 维普 万方数据 等数据库收录!
点击此处可从《计算物理》浏览原始摘要信息
点击此处可从《计算物理》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号