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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)
2018-12-15
发表期刊FUEL
卷号234页码:502-507
ISSN0016-2361
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.
关键词Oblique detonation Hydrogen Initiation mechanism Critical
DOI10.1016/j.fuel.2018.07.048
URL查看原文
收录类别SCI ; EI
语种英语
WOS记录号WOS:000445253100053
关键词[WOS]WAVES ; COMBUSTION ; SIMULATION ; PROPULSION ; IGNITION ; SURFACES
WOS研究方向Energy & Fuels ; Engineering, Chemical
WOS类目Energy & Fuels ; Engineering
项目资助者NSFC [91641130, 11372333]
论文分区一类
力学所作者排名2
引用统计
文献类型期刊论文
条目标识符http://dspace.imech.ac.cn/handle/311007/77869
专题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
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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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