IMECH-IR  > 高温气体动力学国家重点实验室
Initiation characteristics of wedge-induced oblique detonation waves in a stoichiometric hydrogen-air mixture
Teng HH(滕宏辉); Ng HD; Jiang ZL(姜宗林); Teng, HH (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China.
Source PublicationPROCEEDINGS OF THE COMBUSTION INSTITUTE
2017
Volume36Issue:2Pages:2735-2742
ISSN1540-7489
AbstractThe initiation features of two-dimensional oblique detonations from a wedge in a stoichiometric hydrogen-air mixture are investigated via numerical simulations using the reactive Euler equations with de-tailed chemistry. A parametric study is performed to analyze the effect of inflow pressure P-0 and Mach number M-0 on the initiation structure and length. The present numerical results demonstrate that the two transition patterns i.e. an abrupt transition from a multi-wave point connecting the oblique shock and the detonation surface and a smooth transition via a curved shock depend strongly on the inflow Mach number while the inflow pressure is found to have little effect on the oblique shock-to-detonation transition type. The present results also reveal a slightly more complex structure of abrupt transition type in the case of M-0 = 7.0 consisting of various chemical and gasdynamic processes in the shocked gas mixtures. The present results show quantitatively that the initiation length decreases with increasing M-0 primarily due to the in-crease of post-shock temperature. Furthermore the effect of M-0 on initiation length is independent of P-0 but given the same M-0 the initiation length is found to be inversely proportional to P-0. Theoretical analysis based on the constant volume combustion (CVC) theory is also performed and the results are close to the numerical simulations in the case of high M-0 regardless of P-0 demonstrating that the post-oblique-shock condition i.e. post-shock temperature is the key parameter affecting the initiation. At decreasing M-0 the CVC theory breaks down suggesting a switch from chemical kinetics-controlled to a wave-controlled gasdynamic process. For high inflow pressure P-0 at decreasing M-0 the CVC theoretical estimations depart from numerical results faster than those of low P-0 due to the presence of the non-monotonic effects of chemical kinetic limits in hydrogen oxidation at high pressure. (C) 2016 by The Combustion Institute. Published by Elsevier Inc.
KeywordOblique Detonation Formation Structure Hydrogen Shock Wave Detailed Chemistry
DOI10.1016/j.proci.2016.09.025
Indexed BySCI ; EI
Language英语
WOS IDWOS:000397458900123
WOS KeywordCHEMICAL-KINETICS ; COMBUSTION ; SIMULATION ; STABILITY ; ALGORITHM ; SURFACES ; WAMR
WOS Research AreaThermodynamics ; Energy & Fuels ; Engineering
WOS SubjectThermodynamics ; Energy & Fuels ; Engineering, Chemical ; Engineering, Mechanical
Funding OrganizationNSFC(11372333 ; 51376165)
DepartmentLHD激波与爆轰物理
Classification一类
Ranking1
Citation statistics
Cited Times:29[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/60597
Collection高温气体动力学国家重点实验室
Corresponding AuthorTeng, HH (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Teng HH,Ng HD,Jiang ZL,et al. Initiation characteristics of wedge-induced oblique detonation waves in a stoichiometric hydrogen-air mixture[J]. PROCEEDINGS OF THE COMBUSTION INSTITUTE,2017,36(2):2735-2742.
APA 滕宏辉,Ng HD,姜宗林,&Teng, HH .(2017).Initiation characteristics of wedge-induced oblique detonation waves in a stoichiometric hydrogen-air mixture.PROCEEDINGS OF THE COMBUSTION INSTITUTE,36(2),2735-2742.
MLA 滕宏辉,et al."Initiation characteristics of wedge-induced oblique detonation waves in a stoichiometric hydrogen-air mixture".PROCEEDINGS OF THE COMBUSTION INSTITUTE 36.2(2017):2735-2742.
Files in This Item: Download All
File Name/Size DocType Version Access License
JouAr-2017-008.pdf(1409KB)期刊论文作者接受稿开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[滕宏辉]'s Articles
[Ng HD]'s Articles
[姜宗林]'s Articles
Baidu academic
Similar articles in Baidu academic
[滕宏辉]'s Articles
[Ng HD]'s Articles
[姜宗林]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[滕宏辉]'s Articles
[Ng HD]'s Articles
[姜宗林]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: JouAr-2017-008.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

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