界面不稳定性引起湍流混合的二阶封闭模型  

A TWO ORDER CLOSED MODEL OF THE INTERFACE INSTABILITY INDUCED TURBULENT MIXING

作　　者：张忠珍[1] 王继海[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

出　　处：《爆炸与冲击》1996年第3期232-242,共11页Explosion and Shock Waves

基　　金：中国工程物理研究院资金

摘　　要：在Ｂｅｓｎａｒｄ［１～３］等人的模型基础上发展了一个二阶封闭模型。它比原模型少二个方程，降低了计算量，使模型更具有经济性。并采用各向异性的扩散系数，能够更好地描述各向异性的湍流流场。编写了一维可压缩流体力学湍流混合程序，数值模拟Ｂｒｏｕｉｌｅｔｔｅ［４］等的实验结果。This paper presents a two order closed model.It is based on but simpler than Besnards model .The anisotropic diffusion mechanism is considered in the model so that it can better describes the anisotropic turbulence flow such as turbulent mixing induced by R T or R M instability.We have developed an one dimensional Lagrange compressible hydrodynamic code,and simulated Brouillette and Sturtvants shock tube experiment.Results is well in accord with the experiments.

关 键 词：二阶封闭模型 湍流混合 数值模拟 

分 类 号：O357.5[理学—流体力学] O241.82[理学—力学]