| Coupled Richtmyer-Meshkov and Kelvin-Helmholtz instability on a shock-accelerated inclined single-mode interface | |
| Cao, Qing1; Li, Jiaxuan1; Wang, He1; Zhai, Zhigang1; Luo XS(罗喜胜)1,2 | |
| Corresponding Author | Wang, He([email protected]) ; Zhai, Zhigang([email protected]) |
| Source Publication | JOURNAL OF FLUID MECHANICS
 |
| 2024-10-02 | |
| Volume | 996Pages:24 |
| ISSN | 0022-1120 |
| Abstract | The coupling of Richtmyer-Meshkov instability (RMI) and Kelvin-Helmholtz instability (KHI), referred to as RM-KHI, on a shock-accelerated inclined single-mode air-SF6 interface is studied through shock-tube experiments, focusing on the evolution of the perturbation distributed along the inclined interface. To clearly capture the linear (overall linear to nonlinear) evolution of RM-KHI, a series of experiments with a weak (relatively strong) incident shock is conducted. For each series of experiments, various theta(i )(angle between incident shock and equilibrium position of the initial interface) are considered. The nonlinear flow features manifest earlier and develop faster when theta(i) is larger and/or shock is stronger. In addition, the interface with theta(i)>0(degrees) evolves obliquely along its equilibrium position under the effect of KHI. RMI dominates the early-time amplitude evolution regardless of theta(i) and shock intensity, which arises from the discrepancy in the evolution laws between RMI and KHI. KHI promotes the post-early-stage amplitude growth and its contribution is related positively to theta(i). An evident exponential-like amplitude evolution behaviour emerges in RM-KHI with a relatively strong shock and large theta(i). The linear model proposed by Mikaelian (Phys. Fluids, vol. 6, 1994, pp. 1943-1945) is valid for RM-KHI within the linear period. In contrast, the adaptive vortex model (Sohn et al., Phys. Rev. E, vol. 82, 2010, p. 046711) can effectively predict both the interface morphology and overall amplitude evolutions from the linear to nonlinear regimes. |
| Keyword | shock waves |
| DOI | 10.1017/jfm.2024.710 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:001326776200001 |
| WOS Keyword | WAVE REFRACTION PATTERNS ; RAYLEIGH-TAYLOR ; SURFACE-TENSION ; MACH NUMBER ; TRANSITION ; EVOLUTION ; PLANAR |
| WOS Research Area | Mechanics ; Physics |
| WOS Subject | Mechanics ; Physics, Fluids & Plasmas |
| Funding Project | National Natural Science Foundation of China[12102425] ; National Natural Science Foundation of China[12372281] ; National Natural Science Foundation of China[12388101] ; Youth Innovation Promotion Association CAS ; Fundamental Research Funds for the Central Universities ; Young Elite Scientists Sponsorship Program by CAST[2023QNRC001] |
| Funding Organization | National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS ; Fundamental Research Funds for the Central Universities ; Young Elite Scientists Sponsorship Program by CAST |
| Classification | 一类/力学重要期刊 |
| Ranking | 3+ |
| Contributor | Wang, He ; Zhai, Zhigang |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/96920 |
| Collection | 高温气体动力学国家重点实验室 |
| Affiliation | 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 |
| Recommended Citation GB/T 7714 | Cao, Qing,Li, Jiaxuan,Wang, He,et al. Coupled Richtmyer-Meshkov and Kelvin-Helmholtz instability on a shock-accelerated inclined single-mode interface[J]. JOURNAL OF FLUID MECHANICS,2024,996:24.Rp_Au:Wang, He, Zhai, Zhigang |
| APA | Cao, Qing,Li, Jiaxuan,Wang, He,Zhai, Zhigang,&罗喜胜.(2024).Coupled Richtmyer-Meshkov and Kelvin-Helmholtz instability on a shock-accelerated inclined single-mode interface.JOURNAL OF FLUID MECHANICS,996,24. |
| MLA | Cao, Qing,et al."Coupled Richtmyer-Meshkov and Kelvin-Helmholtz instability on a shock-accelerated inclined single-mode interface".JOURNAL OF FLUID MECHANICS 996(2024):24. |
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