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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.
Source PublicationPHYSICS OF FLUIDS
2015-09
Volume27Issue:9Pages:96101
ISSN1070-6631
AbstractTwo-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.
DOI10.1063/1.4930986
URL查看原文
Indexed BySCI ; EI
Language英语
WOS IDWOS:000362570800046
WOS KeywordINDUCED COMBUSTION RAMJETS ; ZONE STRUCTURE ; WEDGE ; STABILITY ; SIMULATION ; SURFACES
WOS Research AreaMechanics ; Physics
WOS SubjectMechanics ; Physics, Fluids & Plasmas
Funding OrganizationThe research is supported by NSFC Nos. 11372333 and 51376165.
DepartmentLHD激波与爆轰物理
Classification一类/力学重要期刊
Citation statistics
Cited Times:26[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/58403
Collection高温气体动力学国家重点实验室
Corresponding AuthorWang, T (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China.
Recommended Citation
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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