Interfacial instabilities driven by co-directional rarefaction and shock waves

doi:10.1017/jfm.2024.24

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

	Interfacial instabilities driven by co-directional rarefaction and shock waves
	Gao, Xing; Guo, Xu; Zhai, Zhigang; Luo XS(罗喜胜)
刊名	JOURNAL OF FLUID MECHANICS
	2024-01-31
卷号	980 页码:27
关键词	shock waves
ISSN号	0022-1120
DOI	10.1017/jfm.2024.24
通讯作者	Guo, Xu(clguoxu@ustc.edu.cn) ; Zhai, Zhigang(sanjing@ustc.edu.cn)
英文摘要	We report the first experiments on hydrodynamic instabilities of a single-mode light/heavy interface driven by codirectional rarefaction and shock waves. The experiments are conducted in a specially designed rarefaction-shock tube that enables the decoupling of interfacial instabilities caused by these co-directional waves. After the impacts of rarefaction and shock waves, the interface evolution transitions into Richtmyer-Meshkov unstable states from Rayleigh-Taylor (RT) stable states, which is different from the finding in the previous case with counter-directional rarefaction and shock waves. A scaling method is proposed, which effectively collapses the RT stable perturbation growths. An analytical theory for predicting the time-dependent acceleration and density induced by rarefaction waves is established. Based on the analytical theory, the model proposed by Mikaelian (Phys. Fluids, vol. 21, 2009, p. 024103) is revised to provide a good description of the dimensionless RT stable behaviour. Before the shock arrival, the unequal interface velocities, caused by rarefaction-induced uneven vorticity, result in a V-shape-like interface. The linear growth rate of the amplitude is insensitive to the pre-shock interface shape, and can be well predicted by the linear superposition of growth rates induced by rarefaction and shock waves. The nonlinear growth rate is higher than that of a pure single-mode case, which can be predicted by the nonlinear models (Sadot et al., Phys. Rev. Lett., vol. 80, 1998, pp. 1654-1657; Dimonte & Ramaprabhu, Phys. Fluids, vol. 22, 2010, p. 014104).
分类号	一类/力学重要期刊
资助项目	National Natural Science Foundation of China[12302371] ; National Natural Science Foundation of China[12372281] ; National Natural Science Foundation of China[91952205] ; Fundamental Research Funds for the Central Universities[WK2090000048] ; China Postdoctoral Science Foundation[2022M723041]
WOS关键词	RICHTMYER-MESHKOV INSTABILITY ; HIGH MACH NUMBER ; SINGLE-MODE ; RAYLEIGH-TAYLOR ; NONLINEAR-THEORY ; ACCELERATION ; TRANSITION ; SIMULATION ; EVOLUTION ; VELOCITY
WOS研究方向	Mechanics ; Physics
语种	英语
WOS记录号	WOS:001153024500001
资助机构	National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; China Postdoctoral Science Foundation
其他责任者	Guo, Xu ; Zhai, Zhigang
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/94378]
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	Gao, Xing,Guo, Xu,Zhai, Zhigang,et al. Interfacial instabilities driven by co-directional rarefaction and shock waves[J]. JOURNAL OF FLUID MECHANICS,2024,980:27.
APA	Gao, Xing,Guo, Xu,Zhai, Zhigang,&罗喜胜.(2024).Interfacial instabilities driven by co-directional rarefaction and shock waves.JOURNAL OF FLUID MECHANICS,980,27.
MLA	Gao, Xing,et al."Interfacial instabilities driven by co-directional rarefaction and shock waves".JOURNAL OF FLUID MECHANICS 980(2024):27.