Numerical study on reflection of an oblique detonation wave on an outward turning wall
文献类型：期刊论文
| 作者 | Wang KL(王宽亮)3; Zhang ZJ(张子健)1,2; Yang PF(杨鹏飞)1,2 ; Teng HH(滕宏辉)3
|
| 刊名 | PHYSICS OF FLUIDS
 |
| 出版日期 | 2020-04-01 |
| 卷号 | 32期号:4页码:10 |
| ISSN号 | 1070-6631 |
| DOI | 10.1063/5.0001845 |
| 通讯作者 | Teng, Honghui(hhteng@bit.edu.cn) |
| 英文摘要 | Oblique detonation waves (ODWs) have been studied widely as the basis of detonation-based hypersonic engines, but there are few studies on ODWs in a confined space. This study simulates ODW reflection on a solid wall before an outward turning corner for a simplified combustor-nozzle flow based on a two-step kinetic model. Numerical results reveal three types of ODW structures: stable, critical, and unstable. When the reflection occurs at the turning point, the stable ODW structure remains almost the same as before reflection. When the wave reflects at the wall before the turning point, either the critical structure or the unstable structure arises, which has never been investigated before. Both structures have the same initial two-section detonation surface: but the critical one becomes stationary at a certain position, while the unstable one keeps traveling upstream. By adjusting the location of the expansion wave and degree of the turning angle, the difference of the two structures is attributed to the thermal choking appearing only in the unstable structure. The thermal choking is achieved by the merging of subsonic zones, whose dependence on the various parameters is discussed. |
| 分类号 | 一类/力学重要期刊 |
| WOS关键词 | SHOCK-INDUCED COMBUSTION ; INSTABILITY ; PROPULSION ; INITIATION |
| 资助项目 | National Natural Science Foundation of China (NSFC)[11822202] ; National Natural Science Foundation of China (NSFC)[91641130] |
| WOS研究方向 | Mechanics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000524279900002 |
| 资助机构 | National Natural Science Foundation of China (NSFC) |
| 其他责任者 | Teng, Honghui |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/81903]  |
| 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.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China; 3.Beijing Inst Technol, Sch Aerosp Engn, Beijing 100081, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Wang KL,Zhang ZJ,Yang PF,et al. Numerical study on reflection of an oblique detonation wave on an outward turning wall[J]. PHYSICS OF FLUIDS,2020,32(4):10. |
| APA | 王宽亮,张子健,杨鹏飞,&滕宏辉.(2020).Numerical study on reflection of an oblique detonation wave on an outward turning wall.PHYSICS OF FLUIDS,32(4),10. |
| MLA | 王宽亮,et al."Numerical study on reflection of an oblique detonation wave on an outward turning wall".PHYSICS OF FLUIDS 32.4(2020):10. |
入库方式： OAI收割
来源：力学研究所
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