Initial perturbation dependence on Richtmyer-Meshkov instability with reshock
文献类型：期刊论文
| 作者 | Zhang, Yumeng2; Zhao, Yong2; Zhou, Zhangbo2; Ding, Juchun1,2; Luo XS(罗喜胜)2 |
| 刊名 | JOURNAL OF FLUID MECHANICS
 |
| 出版日期 | 2025-07-21 |
| 卷号 | 1015页码:29 |
| 关键词 | shock waves shear-flow instability |
| ISSN号 | 0022-1120 |
| DOI | 10.1017/jfm.2025.10377 |
| 通讯作者 | Ding, Juchun(xluo@ustc.edu.cn) ; Luo, Xisheng(djc@ustc.edu.cn) |
| 英文摘要 | The Richtmyer-Meshkov instability at gas interfaces with controllable initial perturbation spectra under reshock conditions is investigated both experimentally and theoretically. A soap-film method is adopted to generate well-defined single-, dual- and triple-mode air/SF $_6$ interfaces. By inserting an acrylic block into the test section, a reflected shock with controllable reshock timing is created. The results reveal a complex relationship between the post-reshock perturbation growth rate and the pre-reshock interface morphology. For single-mode interfaces, the post-reshock growth rate exhibits a strong dependence on pre-reshock conditions. In contrast, for multi-mode interfaces, this dependence weakens significantly due to mode-coupling effects. It is found that, following reshock, each fundamental mode develops independently and later is significantly influenced by mode-coupling effects. Based on this finding, we propose an empirical model that matches the initial linear growth rate and the asymptotic growth rate, accurately predicting the evolution of fundamental modes from early to late stages across all three configurations. Furthermore, a theoretical formula is derived, linking the empirical coefficient in the model of Charakhch'An (2020 J. Appl. Mech. Tech. Phys. vol. 41, no. 1, pp. 23-31) to the initial perturbation. This provides a unified framework to explain the varying dependence of post-reshock growth rates on pre-reshock morphology observed in previous experiments. |
| 分类号 | 一类/力学重要期刊 |
| WOS关键词 | RAYLEIGH-TAYLOR ; SINGLE-MODE ; NUMERICAL-SIMULATION ; SHOCK ; GROWTH ; TURBULENCE ; PLANAR ; DRIVEN ; TRANSITION ; NUMBER |
| 资助项目 | National Natural Science Foundation of China[12388101] ; National Natural Science Foundation of China[12402259] ; National Key Research and Development Program of China[2022YFF0504500] ; Strategic Priority Research Program of Chinese Academy of Science[XDB1100120] ; Strategic Priority Research Program of Chinese Academy of Science[XDB0500301] ; Laoshan Laboratory[LSKJ202300305] |
| WOS研究方向 | Mechanics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001531685000001 |
| 资助机构 | National Natural Science Foundation of China ; National Key Research and Development Program of China ; Strategic Priority Research Program of Chinese Academy of Science ; Laoshan Laboratory |
| 其他责任者 | Ding, Juchun，罗喜胜 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/102110]  |
| 专题 | 力学研究所_高温气体动力学国家重点实验室 |
| 作者单位 | 1.Laoshan Lab, Qingdao 266237, Peoples R China 2.Univ Sci & Technol China, Sch Engn Sci, State Key Lab High Temp Gas Dynam, Hefei 230026, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Zhang, Yumeng,Zhao, Yong,Zhou, Zhangbo,et al. Initial perturbation dependence on Richtmyer-Meshkov instability with reshock[J]. JOURNAL OF FLUID MECHANICS,2025,1015:29. |
| APA | Zhang, Yumeng,Zhao, Yong,Zhou, Zhangbo,Ding, Juchun,&罗喜胜.(2025).Initial perturbation dependence on Richtmyer-Meshkov instability with reshock.JOURNAL OF FLUID MECHANICS,1015,29. |
| MLA | Zhang, Yumeng,et al."Initial perturbation dependence on Richtmyer-Meshkov instability with reshock".JOURNAL OF FLUID MECHANICS 1015(2025):29. |
入库方式： OAI收割
来源：力学研究所
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