Simulations on perturbation growth and mixing of a shocked light fluid layer with two different interfaces

doi:10.1063/5.0243145

	Simulations on perturbation growth and mixing of a shocked light fluid layer with two different interfaces
	Zheng, Dugang 1; Guo, Xu 1; Zhai, Zhigang 1; Luo XS(罗喜胜)1,2
通讯作者	Guo, Xu([email protected])
发表期刊	PHYSICS OF FLUIDS
	2024-12-01
卷号	36 期号:12 页码:13
ISSN	1070-6631
摘要	The Richtmyer-Meshkov instability of a light fluid layer with two different interface modes is studied numerically. By fixing the wavelength of the second interface (I2) while varying that of the first interface (I1), we examine distinct cases with identical wavelengths at both interfaces, as well as smaller or larger wavelengths at I1, to explore the effects of initial layer configurations on instability development. The larger wavelength interface significantly transmits modes to the smaller wavelength interface, whereas mode transmission in the reverse direction is limited. This results in two primary consequences: (i) the smaller wavelength interface and the overall mixing layer evolve periodically with the larger wavelength; (ii) compared to the identical wavelength case, the linear amplitude growth duration of I2 is slightly extended for the smaller I1 wavelength case, but significantly prolonged for the larger I1 wavelength case. The linear amplitude growth rate of I2 for all cases can be predicted by the model of Jacobs et al. [ J. Fluid Mech., vol. 195, 23-42 (1995)]. For cases with identical wavelengths and larger I1 wavelengths, the collisions of finger structures at both interfaces occur earlier, suppressing the growth of mixing width at early times while enhancing the mixed mass. In the later stages, the overall mixing efficiency in these cases significantly declines, despite continuous increases in both mixing width and mixed mass. This decline is attributed to severe deformation of the mixing layer due to interactions between finger structures, confining intense mixing to localized regions.
DOI	10.1063/5.0243145
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:001369269000042
关键词[WOS]	RICHTMYER-MESHKOV INSTABILITIES ; TRANSITION ; EVOLUTION ; TAYLOR ; MODE
WOS研究方向	Mechanics ; Physics
WOS类目	Mechanics ; Physics, Fluids & Plasmas
资助项目	National Natural Science Foundation of China10.13039/501100001809[12302371] ; National Natural Science Foundation of China10.13039/501100001809[12372281] ; National Natural Science Foundation of China10.13039/501100001809[12388101] ; National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS[XDB0620201] ; Strategic Priority Research Program of Chinese Academy of Sciences[WK2090000048] ; Fundamental Research Funds for the Central Universities
项目资助者	National Natural Science Foundation of China10.13039/501100001809 ; National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS ; Strategic Priority Research Program of Chinese Academy of Sciences ; Fundamental Research Funds for the Central Universities
论文分区	一类/力学重要期刊
力学所作者排名	3+
RpAuthor	Guo, Xu
引用统计
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/97733
专题	高温气体动力学国家重点实验室
作者单位	1.Univ Sci & Technol China, Dept Modern Mech, Adv Prop Lab, Hefei 230026, Peoples R China; 2.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Zheng, Dugang,Guo, Xu,Zhai, Zhigang,et al. Simulations on perturbation growth and mixing of a shocked light fluid layer with two different interfaces[J]. PHYSICS OF FLUIDS,2024,36,12,:13.Rp_Au:Guo, Xu
APA	Zheng, Dugang,Guo, Xu,Zhai, Zhigang,&罗喜胜.(2024).Simulations on perturbation growth and mixing of a shocked light fluid layer with two different interfaces.PHYSICS OF FLUIDS,36(12),13.
MLA	Zheng, Dugang,et al."Simulations on perturbation growth and mixing of a shocked light fluid layer with two different interfaces".PHYSICS OF FLUIDS 36.12(2024):13.