High-amplitude wall heat flux events in an impinging shock wave/turbulent boundary layer interaction
文献类型：期刊论文
| 作者 | Yuan, Xianxu3; Tong, Fulin3; Limei, Junjie3; Ji XX(纪相鑫)1,2 ; Li XL(李新亮)1,2
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| 刊名 | CHINESE JOURNAL OF AERONAUTICS
 |
| 出版日期 | 2025-06-01 |
| 卷号 | 38期号:6页码:13 |
| 关键词 | Shock wave Turbulent boundary layer Wall heat flux Extreme events Direct numerical simulation |
| ISSN号 | 1000-9361 |
| DOI | 10.1016/j.cja.2025.103419 |
| 通讯作者 | Tong, Fulin(515363491@qq.com) |
| 英文摘要 | This study focuses on High-Amplitude Wall Heat Flux events (HAWHFs) occurring during the interaction between a supersonic flat-plate Turbulent Boundary Layer (TBL) at a Mach number of 2.25 and an oblique shock wave impinging at 33.2 degrees. A database from a validated direct numerical simulation is analyzed using conditional averaging and a two-dimensional clustering methodology to elucidate the statistical characteristics of both positive and negative HAWHFs within the interaction region. The results reveal that the interaction considerably affects the temporal attributes of the HAWHFs, leading to an extended lifespan for the positive HAWHFs and an increased interval between the occurrences of negative HAWHFs. The structural characteristics of the identified HAWHFs are delineated based on the evolution of population density, aspect ratio, and both absolute and relative distances throughout the interaction. The joint probability density functions of the relative positioning of two adjacent structures indicate that, away from the reattachment point, the positive HAWHFs align in the spanwise direction, displaying similarities with the negative HAWHFs. Moreover, a conditional analysis of flow structures associated with HAWHFs is conducted. This analysis of the conditionally averaged three-dimensional fields reveals that the interaction fosters larger-scale organizational patterns in the downstream region. However, the formation of positive and negative HAWHFs remains largely unaffected by the interaction, with the former predominantly linked to a two-layer temperature structure and the latter primarily associated with a pair of oblique vortices. (c) 2025 The Author(s). Published by Elsevier Ltd on behalf of Chinese Society of Aeronautics and Astronautics. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/ licenses/by-nc-nd/4.0/). |
| 分类号 | 一类 |
| WOS关键词 | DIRECT NUMERICAL-SIMULATION ; WAVE ; FLUCTUATIONS |
| 资助项目 | National Natural Science Foundation of China[12232018] ; National Natural Science Foundation of China[12072360] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001502114000007 |
| 资助机构 | National Natural Science Foundation of China |
| 其他责任者 | Tong, Fulin |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/101763]  |
| 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.State Key Lab Aerodynam, Mianyang 621000, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Yuan, Xianxu,Tong, Fulin,Limei, Junjie,et al. High-amplitude wall heat flux events in an impinging shock wave/turbulent boundary layer interaction[J]. CHINESE JOURNAL OF AERONAUTICS,2025,38(6):13. |
| APA | Yuan, Xianxu,Tong, Fulin,Limei, Junjie,纪相鑫,&李新亮.(2025).High-amplitude wall heat flux events in an impinging shock wave/turbulent boundary layer interaction.CHINESE JOURNAL OF AERONAUTICS,38(6),13. |
| MLA | Yuan, Xianxu,et al."High-amplitude wall heat flux events in an impinging shock wave/turbulent boundary layer interaction".CHINESE JOURNAL OF AERONAUTICS 38.6(2025):13. |
入库方式： OAI收割
来源：力学研究所
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