Numerical investigation of oblique detonations induced by a finite wedge in a stoichiometric hydrogen-air mixture

doi:10.1016/j.fuel.2018.07.048

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

	Numerical investigation of oblique detonations induced by a finite wedge in a stoichiometric hydrogen-air mixture
	Fang YS ; Hu ZM(胡宗明); Teng HH(滕红辉)
刊名	FUEL
	2018-12-15
卷号	234 页码:502-507
关键词	Oblique detonation Hydrogen Initiation mechanism Critical
ISSN号	0016-2361
DOI	10.1016/j.fuel.2018.07.048
英文摘要	Two-dimensional, oblique detonation waves (ODWs) in a stoichiometric hydrogen-air mixture are simulated using the reactive Euler equations with a detailed chemical reaction model. This study focuses the effects of expansion waves on the initiation, which is modeled by a finite-length wedge. Numerical results demonstrate that the expansion wave may quench the ODW if it interacts with the initiation region, and the critical position is found to be dependent on the incident Mach number M-0. The critical position moves upstream in the case of high M-0, and downstream in the case of low M-0. Furthermore, ODW structures show different behaviors when the expansion wave is near its critical position. In the case of M-0 = 10, the structure is featured by a stationary but decoupled shock and reactive surface, while a transient downstream-moving ODW is observed in the case of M-0 = 7. By decreasing the turning angle, the former one keeps the same, while the later one becomes also stationary. These differences are related with the initiation mechanisms of two ODW structures, demonstrating that the structure of wave-controlled initiation is more sensitive to the expansion waves than the kinetic-controlled initiation.
分类号	一类
URL标识	查看原文
WOS关键词	WAVES ; COMBUSTION ; SIMULATION ; PROPULSION ; IGNITION ; SURFACES
WOS研究方向	Energy & Fuels ; Engineering, Chemical
语种	英语
WOS记录号	WOS:000445253100053
资助机构	NSFC [91641130, 11372333]
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/77869]
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.Beijing Inst Technol, Sch Aerosp Engn, Beijing 100081, Peoples R China 2.Chinese Acad Sci, State Key Lab High Temp Gas Dynam, Inst Mech, Beijing 100190, Peoples R China 3.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Fang YS,Hu ZM,Teng HH. Numerical investigation of oblique detonations induced by a finite wedge in a stoichiometric hydrogen-air mixture[J]. FUEL,2018,234:502-507.
APA	Fang YS,胡宗明,&滕红辉.(2018).Numerical investigation of oblique detonations induced by a finite wedge in a stoichiometric hydrogen-air mixture.FUEL,234,502-507.
MLA	Fang YS,et al."Numerical investigation of oblique detonations induced by a finite wedge in a stoichiometric hydrogen-air mixture".FUEL 234(2018):502-507.