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

被引：7

作者：

Guo, Hong-Yu ^{[1
,2
]}

Wang, Li-Feng ^{[2
,3
]}

Ye, Wen-Hua ^{[2
,3
]}

Wu, Jun-Feng ^{[2
]}

Zhang, Wei-Yan ^{[2
]}

机构：

[1] China Acad Engn Phys, Grad Sch, Beijing 100088, Peoples R China

[2] Inst Appl Phys & Computat Math, Beijing 100094, Peoples R China

[3] Peking Univ, Ctr Appl Phys & Technol, HEDPS, Beijing 100871, Peoples R China

来源：

CHINESE PHYSICS B | 2017年 / 26卷 / 12期

基金：

中国国家自然科学基金;

关键词：

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

D O I：

10.1088/1674-1056/26/12/125202

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

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

页数：6

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