| Effect of chemical reaction on mixing transition and turbulent statistics of cylindrical Richtmyer-Meshkov instability | |
Yan, Zheng1; Fu YW(符耀威)2,3; Wang, Lifeng1,4; Yu ZP(于长平)2 ; Li XL(李新亮)2,3
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| Corresponding Author | Li, Xinliang([email protected]) |
| Source Publication | JOURNAL OF FLUID MECHANICS
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| 2022-05-06 | |
| Volume | 941Pages:39 |
| ISSN | 0022-1120 |
| Abstract | Direct numerical simulations of a three-dimensional cylindrical Richtmyer-Meshkov instability with and without chemical reactions are carried out to explore the chemical reaction effects on the statistical characteristics of transition and turbulent mixing. We adopt 9-species and 19-reaction models of non-premixed hydrogen and oxygen separated by a multimode perturbed cylindrical interface. A new definition of mixing width suitable for a chemical reaction is introduced, and we investigate the spatio-temporal evolution of typical flow parameters within the mixing regions. After reshock with a fuller mixing of fuels and oxygen, the chemical reaction becomes sufficiently apparent at affecting the evolution of the flow fields. Because of the generation of a combustion wave within the combustion regions and propagation, the growth of the mixing width with a chemical reaction is accelerated, especially around the outer radius with large temperature gradient profiles. However, the viscous dissipation rate in the early stage of the chemical reaction is greater because of heat release, which results in weakened turbulent mixing within the mixing regions. We confirm that small-scale structures begin to develop after reshock and then decay over time. During the developing process, helicity also begins to develop, in addition to kinetic energy, viscous dissipation rate, enstrophy, etc. In the present numerical simulations with cylindrical geometry, the fluctuating flow fields evolve from quasi-two-dimensional perturbations, and the generations of helicity can capture this transition process. The weakened fluctuations during shock compression can be explained as the inverse energy cascade, and the chemical reaction can promote this inverse energy cascade process. |
| Keyword | shock waves turbulent mixing turbulent reacting flows |
| DOI | 10.1017/jfm.2022.329 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000791488000001 |
| WOS Keyword | DENSITY RATIO DEPENDENCE ; HIGH REYNOLDS-NUMBER ; RAYLEIGH-TAYLOR ; INITIAL CONDITIONS ; EXTREME EVENTS ; SHOCK ; LAYER ; DRIVEN ; SIMULATION ; FLOWS |
| WOS Research Area | Mechanics ; Physics |
| WOS Subject | Mechanics ; Physics, Fluids & Plasmas |
| Funding Project | National Key Research and Development Program of China[2019YFA0405300] ; National Key Research and Development Program of China[2020YFA0711800] ; National Natural Science Foundation of China (NSFC)[12072349] ; National Natural Science Foundation of China (NSFC)[91852203] ; Strategic Priority Research Program of Chinese Academy of Science[XDPB25] |
| Funding Organization | National Key Research and Development Program of China ; National Natural Science Foundation of China (NSFC) ; Strategic Priority Research Program of Chinese Academy of Science |
| Classification | 一类/力学重要期刊 |
| Ranking | 1 |
| Contributor | 李新亮 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/89070 |
| Collection | 高温气体动力学国家重点实验室 |
| Affiliation | 1.Inst Appl Phys & Computat Math, Beijing 100094, Peoples R China; 2.Chinese Acad Sci, Inst Mech, LHD, Beijing 100190, Peoples R China; 3.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 4.Peking Univ, Ctr Appl Phys & Technol, HEDPS, Beijing 100871, Peoples R China |
| Recommended Citation GB/T 7714 | Yan, Zheng,Fu YW,Wang, Lifeng,et al. Effect of chemical reaction on mixing transition and turbulent statistics of cylindrical Richtmyer-Meshkov instability[J]. JOURNAL OF FLUID MECHANICS,2022,941:39.Rp_Au:李新亮 |
| APA | Yan, Zheng,符耀威,Wang, Lifeng,于长平,&李新亮.(2022).Effect of chemical reaction on mixing transition and turbulent statistics of cylindrical Richtmyer-Meshkov instability.JOURNAL OF FLUID MECHANICS,941,39. |
| MLA | Yan, Zheng,et al."Effect of chemical reaction on mixing transition and turbulent statistics of cylindrical Richtmyer-Meshkov instability".JOURNAL OF FLUID MECHANICS 941(2022):39. |
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