Unsteady dynamics of wedge-induced oblique detonations under periodic inflows
文献类型：期刊论文
| 作者 | Yang PF(杨鹏飞)2,3,4; Ng, Hoi Dick1; Teng, Honghui4
|
| 刊名 | PHYSICS OF FLUIDS
 |
| 出版日期 | 2021 |
| 卷号 | 33期号:1页码:15 |
| ISSN号 | 1070-6631 |
| DOI | 10.1063/5.0035829 |
| 通讯作者 | Teng, Honghui(hhteng@bit.edu.cn) |
| 英文摘要 | Two-dimensional, wedge-induced oblique detonation waves (ODWs) subject to periodic inflow are simulated using the reactive Euler equations with a two-step induction-reaction kinetic model. The focus of this work is how the periodic unsteadiness of a sinusoidal density disturbance with varying frequency and amplitude influences an initially established ODW structure. Three fundamental ODW structures with different transition types and inflow Mach numbers are disturbed, resulting in two types of triple-point formations: the main triple point (MTP) and the train of triple points (TTP). The TTP features multi-triple points arising almost simultaneously and traveling together, which has never been observed before. A parametric study and frequency analysis reveal that the MTP derives from forced destabilization, while the TTP derives from the combined effect of surface instability and inflow disturbance. Furthermore, a new phenomenon of MTP degeneration is observed for a proper inflow Mach number and disturbance amplitude. Finally, the oscillation amplitudes of unsteady ODWs are analyzed with respect to the Mach number and inflow disturbance, demonstrating the effects of transition type on surface unsteadiness. |
| 分类号 | 一类/力学重要期刊 |
| 资助项目 | National Natural Science Foundation of China (NSFC)[11822202] ; Natural Sciences and Engineering Research Council of Canada (NSERC) ; 111 Project of China[B16003] |
| WOS研究方向 | Mechanics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000630420200003 |
| 资助机构 | National Natural Science Foundation of China (NSFC) ; Natural Sciences and Engineering Research Council of Canada (NSERC) ; 111 Project of China |
| 其他责任者 | Teng, Honghui |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/86171]  |
| 专题 | 力学研究所_高温气体动力学国家重点实验室 |
| 作者单位 | 1.Concordia Univ, Dept Mech Ind & Aerosp Engn, Montreal, PQ H3G 1M8, Canada 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 3.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China; 4.Beijing Inst Technol, Sch Aerosp Engn, Beijing 100081, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Yang PF,Ng, Hoi Dick,Teng, Honghui. Unsteady dynamics of wedge-induced oblique detonations under periodic inflows[J]. PHYSICS OF FLUIDS,2021,33(1):15. |
| APA | 杨鹏飞,Ng, Hoi Dick,&Teng, Honghui.(2021).Unsteady dynamics of wedge-induced oblique detonations under periodic inflows.PHYSICS OF FLUIDS,33(1),15. |
| MLA | 杨鹏飞,et al."Unsteady dynamics of wedge-induced oblique detonations under periodic inflows".PHYSICS OF FLUIDS 33.1(2021):15. |
入库方式： OAI收割
来源：力学研究所
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