On jet-wake flame stabilization in scramjet: A LES/RANS study from chemical kinetic and fluid-dynamical perspectives

doi:10.1016/j.ast.2021.107255

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

	On jet-wake flame stabilization in scramjet: A LES/RANS study from chemical kinetic and fluid-dynamical perspectives
	Wu K(吴坤)3; Zhang, Peng 2; Fan XJ(范学军)1,3
刊名	AEROSPACE SCIENCE AND TECHNOLOGY
	2022
卷号	120 页码:12
关键词	Supersonic combustion Jet-wake flame stabilization Hybrid LES RANS Detailed hydrogen chemistry Counter-rotating vortex pair
ISSN号	1270-9638
DOI	10.1016/j.ast.2021.107255
通讯作者	Fan, Xuejun(xfan@imech.ac.cn)
英文摘要	A three-dimensional hybrid LES (Large Eddy Simulation)/RANS (Reynolds-averaged Navier-Stokes) study dedicated to understanding the jet-wake flame stabilization under high inflow stagnation temperature in a hydrogen-fueled dual-mode scramjet was presented in this paper. The computational method features a finite-rate PaSR (Partially Stirred Reactor) turbulent combustion model with a detailed hydrogen reaction mechanism. The simulation results agreed well with the experimental results on overall characteristics of the jet-wake flame stabilization mode. Furthermore, quantitatively satisfactory predictions were attained for wall pressures. From the chemical kinetic perspective, the jet-wake flame stabilization can be divided into two regions. In the upstream region, both premixed- and non-premixed combustion are responsible for radical production, and the former produces more heat release. In the downstream region, turbulent non-premixed combustion dominates the flame stabilization. From the fluid dynamic perspective, the premixed flame is sustained by the counter-rotating vortex pair in the leeward side of the jet plume, which creates a local region with enhanced fuel/air mixing and reduced local flow velocity. Non-premixed combustion is found in the leeward side periphery of the fuel jet. (c) 2021 Elsevier Masson SAS. All rights reserved.
分类号	一类
资助项目	National Key Project[GJXM92579] ; Departmental General Research Fund (G-UAHP) in the Hong Kong Polytechnic University
WOS关键词	LARGE-EDDY SIMULATION ; RESOLVED NUMERICAL-SIMULATION ; SUPERSONIC COMBUSTION ; CENTRAL SCHEMES ; HYDROGEN ; IGNITION ; VELOCITY ; METHANE ; FLOW
WOS研究方向	Engineering
语种	英语
WOS记录号	WOS:000730993600004
资助机构	National Key Project ; Departmental General Research Fund (G-UAHP) in the Hong Kong Polytechnic University
其他责任者	Fan, Xuejun
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/88178]
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 Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.Hong Kong Polytech Univ, Dept Mech Engn, Hung Hom, Kowloon, Hong Kong, Peoples R China; 3.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	Wu K,Zhang, Peng,Fan XJ. On jet-wake flame stabilization in scramjet: A LES/RANS study from chemical kinetic and fluid-dynamical perspectives[J]. AEROSPACE SCIENCE AND TECHNOLOGY,2022,120:12.
APA	吴坤,Zhang, Peng,&范学军.(2022).On jet-wake flame stabilization in scramjet: A LES/RANS study from chemical kinetic and fluid-dynamical perspectives.AEROSPACE SCIENCE AND TECHNOLOGY,120,12.
MLA	吴坤,et al."On jet-wake flame stabilization in scramjet: A LES/RANS study from chemical kinetic and fluid-dynamical perspectives".AEROSPACE SCIENCE AND TECHNOLOGY 120(2022):12.