Effects of annular channel widths on wave system structures in wall-detached rotating detonation
文献类型：期刊论文
| 作者 | Xu, Chengyue3,4; Yang PF(杨鹏飞)1,2 ; Teng, Honghui3,4
|
| 刊名 | COMBUSTION AND FLAME
 |
| 出版日期 | 2025-08-01 |
| 卷号 | 278页码:17 |
| 关键词 | Rotating detonation Annular combustor Wavefront structure Wall-detached detonation wave |
| ISSN号 | 0010-2180 |
| DOI | 10.1016/j.combustflame.2025.114249 |
| 通讯作者 | Yang, Pengfei(young1505@foxmail.com) ; Teng, Honghui(hhteng@bit.edu.cn) |
| 英文摘要 | The propagation modes and flow characteristics of wall-detached rotating detonation waves (RDWs) are numerically investigated by solving the three-dimensional Navier-Stokes equations in annular combustors with varying channel widths. This study highlights the crucial role that channel width plays in the evolution of walldetached RDWs, and systematically investigates and elucidates the detonation wave acceleration phenomenon. The results show that RDWs can maintain self-sustained rotation without wall confinement, and two new propagation modes emerge, governed by geometric scaling parameters. In wide channels, the direct interaction between oblique shock waves and the walls leads to the formation of asymmetric multi-wave structures, which challenges the predictions of traditional single-wave propagation models. In contrast, in narrow channels, the RDW exhibits a concave wavefront structure with propagation velocities exceeding the Chapman-Jouguet (C-J) detonation speed, resulting from coupled interactions between recirculation zones and oblique shock waves. In addition, wall-detached RDWs demonstrate better thermodynamic performance compared to wall-attached RDWs, with notably lower heat flux at the combustor walls. These findings, which reveal new mechanisms of shock-wave-wall interactions and the morphological diversity of three-dimensional wave systems under geometric constraints, provide valuable theoretical insights for optimizing the design of high-frequency rotating detonation combustion chambers. |
| 分类号 | 一类/力学重要期刊 |
| WOS关键词 | COMBUSTION ; MULTIPLICITY ; MECHANISM ; BEHAVIOR ; ENGINE |
| 资助项目 | National Natural Science Foundation of China[12441202] ; National Natural Science Foundation of China[12325206] ; National Natural Science Foundation of China[12202014] |
| WOS研究方向 | Thermodynamics ; Energy & Fuels ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001503823700001 |
| 资助机构 | National Natural Science Foundation of China |
| 其他责任者 | 杨鹏飞，Teng, Honghui |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/101772]  |
| 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, State Key Lab High Temp Gas Dynam, Inst Mech, Beijing 100190, Peoples R China; 3.Beijing Inst Technol, State Key Lab Environm Characterist & Effects Near, Beijing 100081, Peoples R China; 4.Beijing Inst Technol, Sch Aerosp Engn, Beijing 100081, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Xu, Chengyue,Yang PF,Teng, Honghui. Effects of annular channel widths on wave system structures in wall-detached rotating detonation[J]. COMBUSTION AND FLAME,2025,278:17. |
| APA | Xu, Chengyue,杨鹏飞,&Teng, Honghui.(2025).Effects of annular channel widths on wave system structures in wall-detached rotating detonation.COMBUSTION AND FLAME,278,17. |
| MLA | Xu, Chengyue,et al."Effects of annular channel widths on wave system structures in wall-detached rotating detonation".COMBUSTION AND FLAME 278(2025):17. |
入库方式： OAI收割
来源：力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。