Effects of compressibility on Richtmyer-Meshkov instability of heavy/light interface

doi:10.1063/5.0207779

CORC > 力学研究所 > 中国科学院力学研究所 > 高温气体动力学国家重点实验室

	Effects of compressibility on Richtmyer-Meshkov instability of heavy/light interface
	Li, Jiaxuan; Chen, Chenren; Zhai, Zhigang; Luo XS(罗喜胜)
刊名	PHYSICS OF FLUIDS
	2024-05-01
卷号	36 期号:5 页码:14
ISSN号	1070-6631
DOI	10.1063/5.0207779
通讯作者	Zhai, Zhigang(sanjing@ustc.edu.cn)
英文摘要	Experimental and numerical studies on the evolution of shock-accelerated SF6/air interface with small initial amplitude are conducted. The effect of compressibility on the early development of perturbation is highlighted by varying shock intensity and fluid properties. The startup process is analyzed when rarefaction waves are reflected and the characteristic time of the startup process is provided. The relationship between the phase inversion process and the startup process under different incident shock strengths is clarified. According to the startup time, a new start point for normalization is given, which can better normalize the amplitude growth at the early stage. In addition, the effects of incident shock strength and physical properties of fluids on the linear growth rate are highlighted through numerical simulations. The incompressible linear model loses validity when the incident shock is strong, and the existing rotational model is verified to provide excellent predictions under any shock strengths. The decrease in adiabatic exponent of the heavy fluid or the increase in adiabatic exponent of the light fluid can reduce the linear growth rate. As the absolute value of Atwood number increases, the adiabatic exponent of the heavy fluid has a more significant effect on the linear growth than that of the light fluid.
分类号	一类/力学重要期刊
WOS关键词	SHOCK ; GROWTH ; RAREFACTION ; STABILITY
WOS研究方向	Mechanics ; Physics
语种	英语
WOS记录号	WOS:001225917600014
其他责任者	Zhai, Zhigang
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/95608]
专题	力学研究所_高温气体动力学国家重点实验室
推荐引用方式 GB/T 7714	Li, Jiaxuan,Chen, Chenren,Zhai, Zhigang,et al. Effects of compressibility on Richtmyer-Meshkov instability of heavy/light interface[J]. PHYSICS OF FLUIDS,2024,36(5):14.
APA	Li, Jiaxuan,Chen, Chenren,Zhai, Zhigang,&罗喜胜.(2024).Effects of compressibility on Richtmyer-Meshkov instability of heavy/light interface.PHYSICS OF FLUIDS,36(5),14.
MLA	Li, Jiaxuan,et al."Effects of compressibility on Richtmyer-Meshkov instability of heavy/light interface".PHYSICS OF FLUIDS 36.5(2024):14.