Experimental investigation of mode transition process in a cavity-based scramjet
文献类型：期刊论文
| 作者 | Meng Y(孟宇)1,2; Sun WM(孙文明)1; Gu HB(顾洪斌)1 ; Chen, Fang2
|
| 刊名 | PHYSICS OF FLUIDS
 |
| 出版日期 | 2024-04-01 |
| 卷号 | 36期号:4页码:11 |
| ISSN号 | 1070-6631 |
| DOI | 10.1063/5.0193282 |
| 通讯作者 | Gu, Hongbin(guhb@imech.ac.cn) |
| 英文摘要 | A directly connected transient scramjet simulator was developed for supersonic combustion experiments to gain a deeper understanding of the process and mechanism of mode transitions in dual-mode scramjet engines. This study presents experimental simulations of flame development under constant combustor inlet conditions with increasing equivalence ratios, utilizing advanced high-speed measurement techniques such as high-frequency static pressure, schlieren imaging, and methylene radical chemiluminescence. The results demonstrated that abrupt changes occurred during the mode transition as the equivalence ratio increased. Specifically, lower equivalence ratios correspond to the shear layer mode, whereas higher equivalence ratios correspond to the jet-wake and jet-front modes. The stable position of the precombustion shock wave is determined by the heat released during combustion, whereas both the precombustion shock wave and the fuel-injection depth determine the combustion mode and flame-anchoring position. Finally, the dynamic variation of shock waves inside the combustor is significant in contributing to abrupt mode transitions. |
| 分类号 | 一类/力学重要期刊 |
| WOS关键词 | COMBUSTION MODES ; SUPERSONIC COMBUSTION ; IGNITION |
| 资助项目 | Nature Science Foundation of Chongqing, China[cstc2021jcyj-msxmX1118] ; Natural Science Foundation of Chongqing, China[11772342] ; National Natural Science Foundation of China |
| WOS研究方向 | Mechanics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001194738900011 |
| 资助机构 | Nature Science Foundation of Chongqing, China ; Natural Science Foundation of Chongqing, China ; National Natural Science Foundation of China |
| 其他责任者 | Gu, Hongbin |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/94917]  |
| 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.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China 2.Shanghai Jiao Tong Univ, Sch Aeronaut & Astronaut, Shanghai 200240, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Meng Y,Sun WM,Gu HB,et al. Experimental investigation of mode transition process in a cavity-based scramjet[J]. PHYSICS OF FLUIDS,2024,36(4):11. |
| APA | 孟宇,孙文明,顾洪斌,&Chen, Fang.(2024).Experimental investigation of mode transition process in a cavity-based scramjet.PHYSICS OF FLUIDS,36(4),11. |
| MLA | 孟宇,et al."Experimental investigation of mode transition process in a cavity-based scramjet".PHYSICS OF FLUIDS 36.4(2024):11. |
入库方式： OAI收割
来源：力学研究所
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