Effect of chemical reaction on mixing transition and turbulent statistics of cylindrical Richtmyer-Meshkov instability

doi:10.1017/jfm.2022.329

CORC > 力学研究所 > 中国科学院力学研究所 > 高温气体动力学国家重点实验室

	Effect of chemical reaction on mixing transition and turbulent statistics of cylindrical Richtmyer-Meshkov instability
	Yan, Zheng 4; Fu, Yaowei 2,3; Wang, Lifeng 1,4; Yu, Changping 3; Li, Xinliang 2,3
刊名	JOURNAL OF FLUID MECHANICS
	2022-05-06
卷号	941 页码:39
关键词	shock waves turbulent mixing turbulent reacting flows
ISSN号	0022-1120
DOI	10.1017/jfm.2022.329
通讯作者	Li, Xinliang(lixl@imech.ac.cn)
英文摘要	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.
资助项目	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]
WOS关键词	DENSITY RATIO DEPENDENCE ; HIGH REYNOLDS-NUMBER ; RAYLEIGH-TAYLOR ; INITIAL CONDITIONS ; EXTREME EVENTS ; SHOCK ; LAYER ; DRIVEN ; SIMULATION ; FLOWS
WOS研究方向	Mechanics ; Physics
语种	英语
WOS记录号	WOS:000791488000001
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China (NSFC) ; Strategic Priority Research Program of Chinese Academy of Science
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/89069]
专题	力学研究所_高温气体动力学国家重点实验室
通讯作者	Li, Xinliang
作者单位	1.Peking Univ, Ctr Appl Phys & Technol, HEDPS, Beijing 100871, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Mech, LHD, Beijing 100190, Peoples R China 4.Inst Appl Phys & Computat Math, Beijing 100094, Peoples R China
推荐引用方式 GB/T 7714	Yan, Zheng,Fu, Yaowei,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.
APA	Yan, Zheng,Fu, Yaowei,Wang, Lifeng,Yu, Changping,&Li, Xinliang.(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.