IMECH-IR  > 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)
Source PublicationFUEL
2018-12-15
Volume234Pages:502-507
ISSN0016-2361
AbstractTwo-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.
KeywordOblique detonation Hydrogen Initiation mechanism Critical
DOI10.1016/j.fuel.2018.07.048
URL查看原文
Indexed BySCI ; EI
Language英语
WOS IDWOS:000445253100053
WOS KeywordWAVES ; COMBUSTION ; SIMULATION ; PROPULSION ; IGNITION ; SURFACES
WOS Research AreaEnergy & Fuels ; Engineering, Chemical
WOS SubjectEnergy & Fuels ; Engineering
Funding OrganizationNSFC [91641130, 11372333]
Classification一类
Ranking2
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/77869
Collection高温气体动力学国家重点实验室
Affiliation1.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
Recommended Citation
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.
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