IMECH-IR  > 高温气体动力学国家重点实验室
Initiation of oblique detonation waves induced by a blunt wedge in stoichiometric hydrogen-air mixtures
Fang YS(方宜申); Zhang ZJ(张子健); Hu ZM(胡宗民); Deng, X
Corresponding AuthorHu, Zongmin(huzm@imech.ac.cn)
Source PublicationAEROSPACE SCIENCE AND TECHNOLOGY
2019-09-01
Volume92Pages:676-684
ISSN1270-9638
AbstractTwo-dimensional, oblique detonation waves (ODWs) in a stoichiometric hydrogen-air mixture are simulated with the reactive Euler equations using a detailed chemical reaction model. This study focuses on blunt wedge induced ODWs, which are not only influenced by inflow parameters but also the size of the blunt body. With the inflow parameters of flight altitude of 30 km and flight Mach number M-0 of 8-10, the numerical results demonstrate that the blunt wedge is crucial to initiate the ODW. In the case of M-0 = 10, the straight wedge without the blunt forebody can initiate the detonation. However, decreasing M-0 causes the failure of initiation, which can be compensated by increasing the radius R-0 of the blunt forebody. By adjusting R-0, two initiation procedures are observed and distinguished: one is the wedge-induced initiation and the other is the blunt forebody-induced initiation. Although both have been independently studied before, in this study, their coexistence is demonstrated, and the mechanism is analyzed for the first time. A theoretical analysis based on the classic initiation theory is performed to elucidate the initiation mechanism, giving a good agreement between the critical radius with numerical results. (C) 2019 Elsevier Masson SAS. All rights reserved.
KeywordOblique detonation wave Blunt wedge Initiation Hydrogen
DOI10.1016/j.ast.2019.06.031
Indexed BySCI ; EI
Language英语
WOS IDWOS:000485852600056
WOS KeywordTRANSITION ; SIMULATIONS
WOS Research AreaEngineering
WOS SubjectEngineering, Aerospace
Funding ProjectNatural Science Foundation of China[11672308] ; Natural Science Foundation of China[11532014]
Funding OrganizationNatural Science Foundation of China
Classification一类
Ranking1
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/79986
Collection高温气体动力学国家重点实验室
Recommended Citation
GB/T 7714
Fang YS,Zhang ZJ,Hu ZM,et al. Initiation of oblique detonation waves induced by a blunt wedge in stoichiometric hydrogen-air mixtures[J]. AEROSPACE SCIENCE AND TECHNOLOGY,2019,92:676-684.
APA 方宜申,张子健,胡宗民,&Deng, X.(2019).Initiation of oblique detonation waves induced by a blunt wedge in stoichiometric hydrogen-air mixtures.AEROSPACE SCIENCE AND TECHNOLOGY,92,676-684.
MLA 方宜申,et al."Initiation of oblique detonation waves induced by a blunt wedge in stoichiometric hydrogen-air mixtures".AEROSPACE SCIENCE AND TECHNOLOGY 92(2019):676-684.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[方宜申]'s Articles
[张子健]'s Articles
[胡宗民]'s Articles
Baidu academic
Similar articles in Baidu academic
[方宜申]'s Articles
[张子健]'s Articles
[胡宗民]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[方宜申]'s Articles
[张子健]'s Articles
[胡宗民]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.