Atwood-number dependence of the Richtmyer-Meshkov instability at a heavy-light single-mode interface
文献类型：期刊论文
| 作者 | Xing, Yinuo1; Chen, Chenren1; Li JX(李佳轩)1; Wang, He1; Zhai, Zhigang1; Luo XS(罗喜胜)1,2 |
| 刊名 | JOURNAL OF FLUID MECHANICS
 |
| 出版日期 | 2025-03-18 |
| 卷号 | 1007页码:23 |
| 关键词 | shock waves compressible turbulence nonlinear instability |
| ISSN号 | 0022-1120 |
| DOI | 10.1017/jfm.2025.107 |
| 通讯作者 | Wang, He(xluo@ustc.edu.cn) ; Luo, Xisheng(ustchewang@ustc.edu.cn) |
| 英文摘要 | The dependence of the Richtmyer-Meshkov instability (RMI) on post-shock Atwood number ( $A_1$ ) is experimentally investigated for a heavy-light single-mode interface. We create initial interfaces with density ratios of heavy to light gases ranging from 1.73 to 34.07, and achieve the highest $|A_1|$ value reported to date for gaseous-interface experiments (0.95). For the first time, spike acceleration is observed in experiments with a heavy-light configuration. The models for the start-up, linear and weakly nonlinear evolution stages are evaluated over a wide range of $A_1$ conditions. Specifically, the models proposed by Li et al. (Phys. Fluids, vol. 36, 2024, 056104) and Wouchuk & Nishihara (Phys. Plasmas, vol. 4, 1997, 1028-1038) effectively describe the start-up and linear stages, respectively, across all cases. None of the considered nonlinear models is valid under all $A_1$ conditions. Based on the dependence of spike and bubble evolutions on $A_1$ provided by the present work and previous study (Chen et al., J. Fluid Mech., vol. 975, 2023, A29), the SEA model (Sadot et al., Phys. Rev. Lett., vol. 80, 1998, pp. 1654-1657), whose expression has clear physical meanings, is modified by revising the coefficient that governs its prediction for early-time evolution. The modified model applies to prediction of the weakly nonlinear evolution of RMI with $A_1$ ranging from -0.95 to -0.35 and from 0.30 to 0.86. Based on this model, an approximation of the critical $A_1$ for the occurrence of spike acceleration is obtained. |
| 分类号 | 一类/力学重要期刊 |
| WOS关键词 | INERTIAL-CONFINEMENT FUSION ; PERTURBATION-THEORY ; IGNITION ; GROWTH |
| 资助项目 | National Natural Science Foundation of China[12102425] ; National Natural Science Foundation of China[12472228] ; National Natural Science Foundation of China[12372281] ; National Natural Science Foundation of China[91952205] ; National Natural Science Foundation of China[12388101] ; Youth Innovation Promotion Association CAS ; Fundamental Research Funds for the Central Universities and Young Elite Scientists Sponsorship Program by CAST[2023QNRC001] |
| WOS研究方向 | Mechanics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001446815800001 |
| 资助机构 | National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS ; Fundamental Research Funds for the Central Universities and Young Elite Scientists Sponsorship Program by CAST |
| 其他责任者 | Wang, He，罗喜胜 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/100694]  |
| 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.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 | Xing, Yinuo,Chen, Chenren,Li JX,et al. Atwood-number dependence of the Richtmyer-Meshkov instability at a heavy-light single-mode interface[J]. JOURNAL OF FLUID MECHANICS,2025,1007:23. |
| APA | Xing, Yinuo,Chen, Chenren,李佳轩,Wang, He,Zhai, Zhigang,&罗喜胜.(2025).Atwood-number dependence of the Richtmyer-Meshkov instability at a heavy-light single-mode interface.JOURNAL OF FLUID MECHANICS,1007,23. |
| MLA | Xing, Yinuo,et al."Atwood-number dependence of the Richtmyer-Meshkov instability at a heavy-light single-mode interface".JOURNAL OF FLUID MECHANICS 1007(2025):23. |
入库方式： OAI收割
来源：力学研究所
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