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 Publication | PHYSICS OF FLUIDS |
2015-09 | |
Volume | 27Issue:9Pages:96101 |
ISSN | 1070-6631 |
Abstract | 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 |
Indexed By | SCI ; EI |
Language | 英语 |
WOS ID | WOS:000362570800046 |
WOS Keyword | INDUCED COMBUSTION RAMJETS ; ZONE STRUCTURE ; WEDGE ; STABILITY ; SIMULATION ; SURFACES |
WOS Research Area | Mechanics ; Physics |
WOS Subject | Mechanics ; Physics, Fluids & Plasmas |
Funding Organization | The research is supported by NSFC Nos. 11372333 and 51376165. |
Department | LHD激波与爆轰物理 |
Classification | 一类/力学重要期刊 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://dspace.imech.ac.cn/handle/311007/58403 |
Collection | 高温气体动力学国家重点实验室 |
Corresponding Author | Wang, 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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