Rayleigh-Taylor instability of multi-fluid layers in cylindrical geometry

被引：0

作者：

郭宏宇 ^{[1
,2
]}

王立锋 ^{[2
,3
]}

叶文华 ^{[2
,3
]}

吴俊峰 ^{[2
]}

张维岩 ^{[2
]}

机构：

[1] Graduate School, China Academy of Engineering Physics

[2] Institute of Applied Physics and Computational Mathematics

[3] HEDPS, Center for Applied Physics and Technology, Peking University

来源：

Chinese Physics B | 2017年 / 12期

关键词：

Rayleigh-Taylor instability; cylindrical geometry; inertial-confinement fusion implosions;

D O I：

暂无

中图分类号：

O35 [流体力学];

学科分类号：

080103 ; 080704 ;

摘要：

Rayleigh-Taylor instability of three fluid layers with two interfaces in cylindrical geometry is investigated analytically.The growth rates and the amplitudes of perturbation on the two interfaces are obtained. The feedback factor from outer to inner interface is larger than that from inner to outer interface under the same conditions. The growth rate on the initially unstable interface is larger than the corresponding result in planar geometry for low mode perturbation. The two interfaces are decoupled for a larger mode number perturbation. The dependencies of the amplitudes of perturbation on different initial conditions are analyzed. The negative feedback effect from initially stable interface to another unstable interface is observed. In the limit of infinity inner radius and finite shell thickness, the results in planar geometry are recovered.

引用

页码：375 / 380

页数：6