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Numerical study on initiation of oblique detonations in hydrogen-air mixtures with various equivalence ratios
Zhang YN; Gong JS; Wang T(王涛); Zhang, YN (reprint author), Beijing Power Machinery Res Inst, State Key Lab Laser Prop & Applicat, Beijing 100074, Peoples R China.
Source PublicationAEROSPACE SCIENCE AND TECHNOLOGY
2016-02
Volume49Pages:130-134
ISSN1270-9638
Abstract

Oblique detonations are simulated using Euler equations with the detailed chemical reaction models, and the initiation in hydrogen-air mixtures is studied. Different from most previous studies, inflow gas mixtures with low pressure and high temperature, derived from high altitude flight conditions of Oblique Detonation Wave Engines (ODWE), are used in this study. Numerical results demonstrate that the oblique shock-detonation surface is composed of three sections, including one section of quasi-detonation, demonstrating the weak coupling of shock and heat release. To study the inflow inhomogeneity effects derived from fuel injection, the simplified cases with different fuel-air equivalence ratios, from 0.1 to 2.0, are simulated and analyzed further. Results show that the dependence of characteristic length on fuel air equivalence ratio is the classical U-shape curve with critical ratio 0.8. Their values are influenced by inflow Ma but keep the same shape regardless of the inflow Ma. (C) 2015 Elsevier Masson SAS. All rights reserved.

KeywordDetonation Hydrogen Initiation Hypersonic
DOI10.1016/j.ast.2015.11.035
URL查看原文
Indexed BySCI ; EI
Language英语
WOS IDWOS:000369198300013
WOS KeywordTHERMOPLASTIC ELASTOMERS ; RUBBER ELASTICITY ; NETWORK MODELS ; BEHAVIOR ; NANOCOMPOSITES ; SIMULATIONS ; RECOVERY ; LIGHT
WOS Research AreaEngineering
WOS SubjectEngineering, Aerospace
Funding OrganizationThe research is supported by NSFC No. 51376165. We would like to thank Prof. Honghui Teng, from Institute of Mechanics CAS, for providing valuable comments on the analyze and help in the paper submission.
DepartmentLHD激波与爆轰物理
Classification一类
Ranking3
Citation statistics
Cited Times:16[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/58680
Collection高温气体动力学国家重点实验室
Corresponding AuthorZhang, YN (reprint author), Beijing Power Machinery Res Inst, State Key Lab Laser Prop & Applicat, Beijing 100074, Peoples R China.
Recommended Citation
GB/T 7714
Zhang YN,Gong JS,Wang T,et al. Numerical study on initiation of oblique detonations in hydrogen-air mixtures with various equivalence ratios[J]. AEROSPACE SCIENCE AND TECHNOLOGY,2016,49:130-134.
APA Zhang YN,Gong JS,Wang T,&Zhang, YN .(2016).Numerical study on initiation of oblique detonations in hydrogen-air mixtures with various equivalence ratios.AEROSPACE SCIENCE AND TECHNOLOGY,49,130-134.
MLA Zhang YN,et al."Numerical study on initiation of oblique detonations in hydrogen-air mixtures with various equivalence ratios".AEROSPACE SCIENCE AND TECHNOLOGY 49(2016):130-134.
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