A dominant dimensionless number and theoretical model for the evolution of multiphase Richtmyer-Meshkov instability
文献类型：期刊论文
| 作者 | Si YM(司英明); Li, Shuai ; Meng BQ(孟宝清); Wang C(王春); Tian, Baolin
|
| 刊名 | PHYSICS OF FLUIDS
 |
| 出版日期 | 2024 |
| 卷号 | 36期号:1页码:9 |
| ISSN号 | 1070-6631 |
| DOI | 10.1063/5.0180793 |
| 通讯作者 | Meng, Baoqing(mengbaoqing92@foxmail.com) |
| 英文摘要 | 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. |
| 分类号 | 一类/力学重要期刊 |
| WOS关键词 | SHOCK ; TAYLOR ; FLOW |
| 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 |
| WOS研究方向 | Mechanics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001144147500009 |
| 资助机构 | Innovative Research Group Project of the National Natural Science Foundation of China10.13039/100014718 ; National Natural Science Foundation of China ; National Key Project |
| 其他责任者 | Meng, Baoqing |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/94225]  |
| 专题 | 力学研究所_流固耦合系统力学重点实验室(2012-) |
| 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. |
入库方式： OAI收割
来源：力学研究所
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