High-amplitude effect on Richtmyer-Meshkov instability at a single-mode heavy-light interface

doi:10.1063/5.0180581

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

	High-amplitude effect on Richtmyer-Meshkov instability at a single-mode heavy-light interface
	Wang, He 2; Wang, Hui 2; Zhai, Zhigang 2; Luo, Xisheng 1,2
刊名	PHYSICS OF FLUIDS
	2023-12-01
卷号	35 期号:12 页码:10
ISSN号	1070-6631
DOI	10.1063/5.0180581
通讯作者	Zhai, Zhigang(sanjing@ustc.edu.cn)
英文摘要	An experimental study is conducted to explore the high-amplitude effect on Richtmyer-Meshkov instability (RMI) at a single-mode heavy-light interface. A wide range of scaled initial amplitude (ka(0), where k and a(0) are perturbation wavenumber and initial amplitude, respectively) is considered. Qualitatively, nonstandard (standard) indirect phase inversion occurs in experiments with high (low and moderate) ka(0). The nonstandard indirect phase inversion exhibits a complex process, and the interface mixing width does not reduce to near zero. Quantitatively, the linear model poorly (accurately) predicts the post-phase-inversion linear amplitude growth rate when ka(0) is high (low and moderate). Additionally, a representative theoretical reduction factor fortuitously evaluates the high-amplitude effect on the post-phase-inversion linear amplitude growth rate well. The high-amplitude effect significantly alters the nonlinear evolution law, which differs from the case of RMI at a light-heavy interface. None of the considered nonlinear models can accurately predict the amplitude evolution under all ka(0) conditions, regardless of whether their expressions are related to ka0 or not. Based on the current experimental results, an empirical nonlinear model is proposed to describe RMI at a single-mode heavy-light interface across a wide range of ka(0) conditions.
资助项目	National Natural Science Foundation of China[12372281] ; National Natural Science Foundation of China[12102425] ; National Natural Science Foundation of China[91952205] ; Youth Innovation Promotion Association CAS ; Fundamental Research Funds for the Central Universities
WOS关键词	SHOCK ; GROWTH
WOS研究方向	Mechanics ; Physics
语种	英语
WOS记录号	WOS:001163067000002
资助机构	National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS ; Fundamental Research Funds for the Central Universities
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/94525]
专题	力学研究所_高温气体动力学国家重点实验室
通讯作者	Zhai, Zhigang
作者单位	1.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China 2.Univ Sci & Technol China, Dept Modern Mech, Adv Prop Lab, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Wang, He,Wang, Hui,Zhai, Zhigang,et al. High-amplitude effect on Richtmyer-Meshkov instability at a single-mode heavy-light interface[J]. PHYSICS OF FLUIDS,2023,35(12):10.
APA	Wang, He,Wang, Hui,Zhai, Zhigang,&Luo, Xisheng.(2023).High-amplitude effect on Richtmyer-Meshkov instability at a single-mode heavy-light interface.PHYSICS OF FLUIDS,35(12),10.
MLA	Wang, He,et al."High-amplitude effect on Richtmyer-Meshkov instability at a single-mode heavy-light interface".PHYSICS OF FLUIDS 35.12(2023):10.