Numerical investigation on movement of triple points on oblique detonation surfaces
文献类型：期刊论文
| 作者 | Yang, Pengfei4; Li, Haoyang2,3; Chen, Zheng4; Wang, Chun3 ; Teng, Honghui1; Wang C(王春); Wang C(王春)
|
| 刊名 | PHYSICS OF FLUIDS
 |
| 出版日期 | 2022-06-01 |
| 卷号 | 34期号:6页码:12 |
| ISSN号 | 1070-6631 |
| DOI | 10.1063/5.0091078 |
| 通讯作者 | Li, Haoyang(lihaoyang20@mails.ucas.ac.cn) |
| 英文摘要 | A normal detonation wave in a gaseous mixture is a transient, multidimensional structure containing triple points (TPs) that collide in pairs and then propagate oppositely. However, the TPs on an oblique detonation wave (ODW) almost propagate along the same direction in most studies. In this study, the reactive Euler equations coupled with a two-step induction-reaction kinetic model are used to solve a two-dimensional wedge-induced ODW. Two novel movement patterns are observed in most cases. Results show that the TPs of the ODW can propagate upstream and even stand on the wave surface. The movement patterns of TPs include downstream, upstream, and steady according to their propagation direction relative to the wedge. We find that the ratio of the post-ODW flow speed U-tau to the transverse wave speed U-tau dominates the TP movement types. When the speed ratio U-tau/U(T )is approximately equal to 1, the TPs can stand on the wave surface. Above unity, downstream TPs form, and upstream TPs correspond to a value smaller than 1. Furthermore, the inflow Mach number has little influence on U-T, while U-tau changes significantly. This is largely due to the high sensitivity of the ODW angle to the inflow. The high heat release rate benefits upstream TPs, and steady TPs form under a large wedge angle. The results are confirmed by varying the inflow Mach number, wedge angle, and chemical parameters. Published under an exclusive license by AIP Publishing. |
| WOS关键词 | TRANSVERSE-WAVES ; INSTABILITY ; INITIATION |
| 资助项目 | National Natural Science Foundation of China (NSFC) ; China Postdoctoral Science Foundation ; Open Project of the State Key Laboratory of High Temperature Gas Dynamics ; [11822202] ; [2021M700222] ; [2021KF01] |
| WOS研究方向 | Mechanics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000841957200003 |
| 资助机构 | National Natural Science Foundation of China (NSFC) ; China Postdoctoral Science Foundation ; Open Project of the State Key Laboratory of High Temperature Gas Dynamics |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/89889]  |
| 专题 | 力学研究所_高温气体动力学国家重点实验室 |
| 通讯作者 | Li, Haoyang |
| 作者单位 | 1.Beijing Inst Technol, Sch Aerosp Engn, Beijing 100081, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, State Key Lab High Temp Gas Dynam, Inst Mech, Beijing 100190, Peoples R China 4.Peking Univ, Coll Engn, Ctr Appl Phys & Technol CAPT, State Key Lab Turbulence & Complex Syst SKLTCS, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Pengfei,Li, Haoyang,Chen, Zheng,et al. Numerical investigation on movement of triple points on oblique detonation surfaces[J]. PHYSICS OF FLUIDS,2022,34(6):12. |
| APA | Yang, Pengfei.,Li, Haoyang.,Chen, Zheng.,Wang, Chun.,Teng, Honghui.,...&Wang C.(2022).Numerical investigation on movement of triple points on oblique detonation surfaces.PHYSICS OF FLUIDS,34(6),12. |
| MLA | Yang, Pengfei,et al."Numerical investigation on movement of triple points on oblique detonation surfaces".PHYSICS OF FLUIDS 34.6(2022):12. |
入库方式： OAI收割
来源：力学研究所
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