Generalized Similarity Laws for Unstart Phenomenon of Contraction Ducts in Supersonic Flow
文献类型：期刊论文
| 作者 | Tong XT(仝晓通)3 ; Zhang QF(张启帆)2; Wu WN(邬婉楠)2; Yue LJ(岳连捷)1,2; He CM(何成明)2; Chen, Zheng3
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| 刊名 | AIAA JOURNAL
 |
| 出版日期 | 2025-06-11 |
| 页码 | 19 |
| 关键词 | Oblique Shock Wave Hypersonic Inlets Boundary Layer Separation Similarity Theorem Inlet Unstart |
| ISSN号 | 0001-1452 |
| DOI | 10.2514/1.J065313 |
| 通讯作者 | Yue, Lian-jie(uelj@imech.ac.cn) ; He, Cheng-ming(hengming.he@ujs.edu.cn) |
| 英文摘要 | The prediction of hypersonic inlet unstart has been a difficult aerodynamic problem over the past half century. Different from inviscid unstart theories, this study develops empirical and theoretical prediction methods for viscous flow. By proposing a corrected contraction angle and contraction ratio, a generalized similarity law for unstart boundary is established and validated by sufficient numerical and experimental results, describing the effects of aerodynamic and geometric parameters simultaneously. To explain the physical implications of the generalized unstart similarity law, two-dimensional flow-based theoretical models are established for three unstart modes using oblique shock relations, free interaction theory, and scaling laws for separation length. For the short-cowl and long-cowl modes, the self-similarity of the unstart boundary is attributed to the separation scale relative to the effective throat height and the mass-averaged throat Mach number accompanied by shock reflections, respectively. The transitional unstart is triggered by the decrease of the shock-impingement distance relative to the separation scale, and the self-similarity is broken by the wedge length independence and Reynolds number dependence. Moreover, to facilitate unstart detection in wind tunnel or flight tests, the corrected dimensionless pressure rise is proposed, correlating the critical wall pressure characteristics with the incident shock pressure rise and dimensionless wedge length. |
| 分类号 | 一类/力学重要期刊 |
| WOS关键词 | SHOCK ; INLET ; COMPRESSION ; HYSTERESIS ; SEPARATION |
| 资助项目 | National Natural Science Foundation of Chinahttp://dx.doi.org/10.13039/501100001809[12402383] ; National Natural Science Foundation of Chinahttp://dx.doi.org/10.13039/501100001809[U2141220] ; National Natural Science Foundation of Chinahttp://dx.doi.org/10.13039/501100001809[12372236] ; National Natural Science Foundation of China |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001508386400001 |
| 资助机构 | National Natural Science Foundation of Chinahttp://dx.doi.org/10.13039/501100001809 ; National Natural Science Foundation of China |
| 其他责任者 | 岳连捷，何成明 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/101817]  |
| 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, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China; 3.Peking Univ, Coll Engn, Beijing 100871, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Tong XT,Zhang QF,Wu WN,et al. Generalized Similarity Laws for Unstart Phenomenon of Contraction Ducts in Supersonic Flow[J]. AIAA JOURNAL,2025:19. |
| APA | 仝晓通,张启帆,邬婉楠,岳连捷,何成明,&Chen, Zheng.(2025).Generalized Similarity Laws for Unstart Phenomenon of Contraction Ducts in Supersonic Flow.AIAA JOURNAL,19. |
| MLA | 仝晓通,et al."Generalized Similarity Laws for Unstart Phenomenon of Contraction Ducts in Supersonic Flow".AIAA JOURNAL (2025):19. |
入库方式： OAI收割
来源：力学研究所
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