Nonlinear Saturation Amplitude in Classical Planar Richtmyer-Meshkov Instability

被引：0
|
作者：
Liu, Wan-Hai [1 ,2 ]
Wang, Xiang [2 ]
Jiang, Hong-Bin [1 ]
Ma, Wen-Fang [1 ]
机构：
[1] Mianyang Normal Univ, Res Ctr Computat Phys, Mianyang 621000, Peoples R China
[2] Lanzhou City Univ, Sch Bailie Engn & Technol, Lanzhou 730070, Peoples R China
来源：
COMMUNICATIONS IN THEORETICAL PHYSICS | 2016年 / 65卷 / 04期
基金：
中国国家自然科学基金;
关键词：
Richtmyer-Meshkov instability; nonlinear saturation amplitude; perturbation expansion; RAYLEIGH-TAYLOR INSTABILITY;
D O I：
10.1088/0253-6102/65/4/523
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The classical planar Richtmyer-Meshkov instability (RMI) at a fluid interface supported by a constant pressure is investigated by a formal perturbation expansion up to the third order, and then according to definition of nonlinear saturation amplitude (NSA) in Rayleigh Taylor instability (RTI), the NSA in planar RMI is obtained explicitly. It is found that the NSA in planar RMI is affected by the initial perturbation wavelength and the initial amplitude of the interface, while the effect of the initial amplitude of the interface on the NSA is less than that of the initial perturbation wavelength. Without marginal influence of the initial amplitude, the NSA increases linearly with wavelength. The NSA normalized by the wavelength in planar RMI is about 0.11, larger than that corresponding to RTI.
引用
收藏
页码：523 / 526
页数：4
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