激波诱导异质气体界面失稳的数值模拟  

Numerical Simulation for Shock Induced Interfacial Instabilities of Heterogeneous Gases

作　　者：周松柏[1] 刘君[1] 郭正[1] 刘瑜[1] 

机构地区：[1]国防科技大学航天与材料工程学院,湖南长沙410073

出　　处：《国防科技大学学报》2009年第1期1-4,共4页Journal of National University of Defense Technology

基　　金：国家自然科学基金资助项目(9050500310602064)

摘　　要：基于二维N-S方程,利用有限差分数值离散方法,对激波诱导异质气体界面失稳的现象进行了数值模拟,与文献中实验结果和计算结果进行了定性比较,并进一步分析了整个流动的非定常动态变化特性和非线性特征。研究表明,本文数值模拟的非定常流场图谱与文献中的实验结果和数值结果吻合较好;数值结果捕捉到了六氟化硫界面的演变过程及流场中复杂的波系结构。Based on the 2-D Navier-Stokes equations, the shock induced irtterfaeial, instabilities of heterogeneous gases was simulated numerically With the finite differential method. After carrying out the comparison between numerical and experimental results, the unsteady and nonlinear characteristics of the flow field was analyzed. From the results, it is observed that the unsteady flow field of numerical simulation is similar to referenced experimentation and CFD results, and the evolvement of sulphur bexafluoride interface and the complicated wave structurcs are captured from simulation.

关 键 词：激波 异质气体 RICHTMYER-MESHKOV不稳定性 数值模拟 

分 类 号：O381[理学—流体力学]