Report
Numerical study on initiation of oblique detonations in hydrogen-air mixtures with various equivalence ratios
| Τίτλος: | Numerical study on initiation of oblique detonations in hydrogen-air mixtures with various equivalence ratios |
|---|---|
| Συγγραφείς: | 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. |
| Έτος έκδοσης: | 2016 |
| Συλλογή: | IMECH-IR (Institute of Mechanics, Chinese Academy of Sciences) / 中国科学院力学研究所机构知识库 |
| Θεματικοί όροι: | Detonation, Hydrogen, Initiation, Hypersonic, THERMOPLASTIC ELASTOMERS, RUBBER ELASTICITY, NETWORK MODELS, BEHAVIOR, NANOCOMPOSITES, SIMULATIONS, RECOVERY, LIGHT, Engineering, Aerospace, 一类 |
| Περιγραφή: | 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. |
| Τύπος εγγράφου: | report |
| Γλώσσα: | English |
| Relation: | AEROSPACE SCIENCE AND TECHNOLOGY; http://dspace.imech.ac.cn/handle/311007/58680; http://dx.doi.org/10.1016/j.ast.2015.11.035 |
| DOI: | 10.1016/j.ast.2015.11.035 |
| Διαθεσιμότητα: | http://dspace.imech.ac.cn/handle/311007/58680 https://doi.org/10.1016/j.ast.2015.11.035 |
| Rights: | "null" |
| Αριθμός Καταχώρησης: | edsbas.3351FDB4 |
| Βάση Δεδομένων: | BASE |
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