Experimental study on Richtmyer-Meshkov instability at a light-heavy interface over a wide range of Atwood numbers
文献类型：期刊论文
| 作者 | Chen, Chenren; Xing, Yinuo; Wang, He; Zhai, Zhigang; Luo XS(罗喜胜) |
| 刊名 | JOURNAL OF FLUID MECHANICS
 |
| 出版日期 | 2023-11-22 |
| 卷号 | 975页码:21 |
| 关键词 | shock waves |
| ISSN号 | 0022-1120 |
| DOI | 10.1017/jfm.2023.869 |
| 通讯作者 | Wang, He(ustchewang@ustc.edu.cn) ; Luo, Xisheng(xsluo@imech.ac.cn) |
| 英文摘要 | Richtmyer-Meshkov instability (RMI) at a light-heavy single-mode interface over a wide range of post-shock Atwood numbers A(1) is studied systematically through elaborate experiments. The interface generation and A(1) variation are achieved by the soap-film technology and gas-layer scheme, respectively. Qualitatively, the nonlinear interface evolution features, including spike, bubble and roll-up structures, are more significant in RMI with higher A1. Quantitatively, both the impulsive model and an analytical linear model perform well in predicting the linear growth rate under a wide range of A(1) conditions. For the weakly nonlinear stage, the significant spike acceleration occurring when A(1) is high, which is observed experimentally for the first time, results in the evolution law of RMI with high A(1) being different from the counterpart with low or intermediate A(1). None of the considered nonlinear models is found to be applicable for RMI under all A(1) conditions, and the predictive capabilities of these models are analysed and summarized. Based on the present experimental results, an empirical nonlinear model is proposed for RMI over a wide range of A(1). Further, modal analysis shows that in RMI with high (low or intermediate) A(1), high-order harmonics evolve rapidly (slowly) and cannot (can) be ignored. Accordingly, for RMI with high (low or intermediate) A(1), the modal model proposed by Zhang & Sohn (Phys. Fluids, vol. 9, 1997, pp. 1106-1124) is less (more) accurate than the one proposed by Vandenboomgaerde et al. (Phys. Fluids, vol. 14, 2002, pp. 1111-1122), since the former ignores perturbation solutions higher than fourth order (the latter retains only terms with the highest power in time). |
| 分类号 | 一类/力学重要期刊 |
| WOS关键词 | INERTIAL-CONFINEMENT FUSION ; SINGLE-MODE ; SHOCK ; EVOLUTION ; TAYLOR ; GROWTH |
| WOS研究方向 | Mechanics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001105762500001 |
| 其他责任者 | Wang, He ; Luo, Xisheng |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/93484]  |
| 专题 | 力学研究所_高温气体动力学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Chen, Chenren,Xing, Yinuo,Wang, He,et al. Experimental study on Richtmyer-Meshkov instability at a light-heavy interface over a wide range of Atwood numbers[J]. JOURNAL OF FLUID MECHANICS,2023,975:21. |
| APA | Chen, Chenren,Xing, Yinuo,Wang, He,Zhai, Zhigang,&罗喜胜.(2023).Experimental study on Richtmyer-Meshkov instability at a light-heavy interface over a wide range of Atwood numbers.JOURNAL OF FLUID MECHANICS,975,21. |
| MLA | Chen, Chenren,et al."Experimental study on Richtmyer-Meshkov instability at a light-heavy interface over a wide range of Atwood numbers".JOURNAL OF FLUID MECHANICS 975(2023):21. |
入库方式： OAI收割
来源：力学研究所
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