A dominant dimensionless number and theoretical model for the evolution of multiphase Richtmyer-Meshkov instability

doi:10.1063/5.0180793

IMECH-IR > 流固耦合系统力学重点实验室

	A dominant dimensionless number and theoretical model for the evolution of multiphase Richtmyer-Meshkov instability
	Si YM(司英明); Li, Shuai; Meng BQ(孟宝清); Wang C(王春); Tian, Baolin
通讯作者	Meng, Baoqing(mengbaoqing92@foxmail.com)
发表期刊	PHYSICS OF FLUIDS
	2024
卷号	36 期号:1 页码:9
ISSN	1070-6631
摘要	Multiphase Richtmyer-Meshkov instability (RMI) is often accompanied by a dispersed phase of particles, where the evolution of the mix zone width (MZW) is a significant issue. The Stokes number ( S t) is a key dimensionless parameter for particle-containing multiphase flows because it represents the ability of particles to follow the fluid. However, our theoretical analysis and numerical simulation indicate that the Stokes number is not the only dominant parameter for the evolution of multiphase RMI. This study uses the derivation of particle and fluid momentum equations to demonstrate the inability of the Stokes number to predict MZW evolution, that is, even at the same Stokes number, increasing the particle density or the radius leads to completely different MZW evolution trends. This study proposes a novel dimensionless number, S d, to measure the effect of drag on the fluid owing to the particles. S d is the ratio of the relaxation time of the fluid velocity affected by the particle force to the characteristic time of the shock wave. We developed theoretical models of MZW at different S d values. Subsequently, a set of multiphase RMI numerical simulations on uniformly distributed particles with different S t and S d values was conducted. The numerical results verify the theoretical predictions and effectiveness of the proposed dimensionless number. The phase diagram containing different simulation cases demonstrates that the Stokes number cannot be used to predict MZW and must be combined with S d to determine its evolution.
DOI	10.1063/5.0180793
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:001144147500009
关键词[WOS]	SHOCK ; TAYLOR ; FLOW
WOS研究方向	Mechanics ; Physics
WOS类目	Mechanics ; Physics, Fluids & Plasmas
资助项目	Innovative Research Group Project of the National Natural Science Foundation of China10.13039/100014718[12002063] ; Innovative Research Group Project of the National Natural Science Foundation of China10.13039/100014718[91852207] ; Innovative Research Group Project of the National Natural Science Foundation of China10.13039/100014718[12132017] ; Innovative Research Group Project of the National Natural Science Foundation of China10.13039/100014718[12072353] ; National Natural Science Foundation of China[GJXM92579] ; National Key Project
项目资助者	Innovative Research Group Project of the National Natural Science Foundation of China10.13039/100014718 ; National Natural Science Foundation of China ; National Key Project
论文分区	一类/力学重要期刊
力学所作者排名	1
RpAuthor	Meng, Baoqing
引用统计
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/94226
专题	流固耦合系统力学重点实验室
推荐引用方式 GB/T 7714	Si YM,Li, Shuai,Meng BQ,et al. A dominant dimensionless number and theoretical model for the evolution of multiphase Richtmyer-Meshkov instability[J]. PHYSICS OF FLUIDS,2024,36,1,:9.
APA	司英明,Li, Shuai,孟宝清,王春,&Tian, Baolin.(2024).A dominant dimensionless number and theoretical model for the evolution of multiphase Richtmyer-Meshkov instability.PHYSICS OF FLUIDS,36(1),9.
MLA	司英明,et al."A dominant dimensionless number and theoretical model for the evolution of multiphase Richtmyer-Meshkov instability".PHYSICS OF FLUIDS 36.1(2024):9.