Similar Rayleigh-Taylor Instability of Shock Fronts Perturbed by Corrugated Interfaces  

作　　者：HE Yong HU Xi-Wei JIANG Zhong-He 何勇;胡希伟;江中和(Institute of Fluid Physics,China Academy of Engineering Physics,Mianyang 621900;College of Electrical and Electronic Engineering,Huazhong University of Science and Technology,Wuhan 430074)

机构地区：[1]Institute of Fluid Physics,China Academy of Engineering Physics,Mianyang 621900 [2]College of Electrical and Electronic Engineering,Huazhong University of Science and Technology,Wuhan 430074

出　　处：《Chinese Physics Letters》2011年第5期184-186,共3页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No 10175025.

摘　　要：Instability of a planar shock front perturbed by a corrugated interface is analyzed,where the perturbation wavelength is along the shock front plane.The presented analysis involves the effects of the features on the shock front,which is different from a general method presented by D'yakov and Kontorovich,where the shock front is taken as an infinitely discontinuity.The growth rate of the instability of the perturbed shock front is obtained and compared with the growth rate of the Rayleigh-Taylor instability(RTI)of an interface,on which the density gradient and the initial conditions are similar to the perturbed shock front.The analysis and comparisons of the growth rate of the instability indicate that the features of the shock front should be considered seriously in the shock interface interactions.

关 键 词：shock PERTURBED INTERFACE 

分 类 号：O17[理学—数学]