Numerical study of oblique detonation wave initiation in a stoichiometric hydrogen-air mixture

doi:10.1063/1.4930986

	Numerical study of oblique detonation wave initiation in a stoichiometric hydrogen-air mixture
	Wang T; Zhang YN; Teng HH(滕宏辉); Jiang ZL(姜宗林); Ng HD; Wang, T (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China.
发表期刊	PHYSICS OF FLUIDS
	2015-09
卷号	27 期号:9 页码:96101
ISSN	1070-6631
摘要	Two-dimensional, oblique detonations induced by a wedge are simulated using the reactive Euler equations with a detailed chemical reaction model. The focus of this study is on the oblique shock-to-detonation transition in a stoichiometric hydrogen-air mixture. A combustible, gas mixture at low pressure and high temperature, corresponding to the realistic, inflow conditions applied in oblique detonation wave engines, is presented in this study. At practical flight conditions, the present numerical results illustrate that oblique detonation initiation is achieved through a smooth transition from a curved shock, which differs from the abrupt transition depicted in the previous studies. The formation mechanism of this smooth transition is discussed and a quantitative analysis is carried out by defining a characteristic length for the initiation process. The dependence of the initiation length on different parameters including the wedge angle, flight Mach number, and inflow Mach number is discussed. Despite the hypothetical nature of the simulation configuration, the present numerical study uses parameters we deem relevant to practical conditions and provides important observations for which future investigations can benefit from in reaching toward a rigorous theory of the formation and self-sustenance of oblique detonation waves. (C) 2015 AIP Publishing LLC.
DOI	10.1063/1.4930986
URL	查看原文
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000362570800046
关键词[WOS]	INDUCED COMBUSTION RAMJETS ; ZONE STRUCTURE ; WEDGE ; STABILITY ; SIMULATION ; SURFACES
WOS研究方向	Mechanics ; Physics
WOS类目	Mechanics ; Physics, Fluids & Plasmas
项目资助者	The research is supported by NSFC Nos. 11372333 and 51376165.
课题组名称	LHD激波与爆轰物理
论文分区	一类/力学重要期刊
引用统计	被引频次：68[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/58403
专题	高温气体动力学国家重点实验室
通讯作者	Wang, T (reprint author), 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	Wang T,Zhang YN,Teng HH,et al. Numerical study of oblique detonation wave initiation in a stoichiometric hydrogen-air mixture[J]. PHYSICS OF FLUIDS,2015,27,9,:96101.
APA	Wang T,Zhang YN,Teng HH,Jiang ZL,Ng HD,&Wang, T .(2015).Numerical study of oblique detonation wave initiation in a stoichiometric hydrogen-air mixture.PHYSICS OF FLUIDS,27(9),96101.
MLA	Wang T,et al."Numerical study of oblique detonation wave initiation in a stoichiometric hydrogen-air mixture".PHYSICS OF FLUIDS 27.9(2015):96101.

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