Impact of continuously extending/retracting wall on Mack-mode evolution in hypersonic boundary layers
文献类型：期刊论文
| 作者 | Jiang GR(蒋根瑞); Dong M(董明); Zhao, Lei |
| 刊名 | PHYSICS OF FLUIDS
 |
| 出版日期 | 2024-11 |
| 卷号 | 36期号:11页码:114106 |
| ISSN号 | 1070-6631 |
| DOI | 10.1063/5.0238172 |
| 英文摘要 | Structural morphing is regarded as a potential solution for future space transportation systems, necessitating aircraft capable of extensive altitude ranges, wide speed ranges, and multi-regime operations. The investigation of laminar-turbulent transition incorporating morphing effects aims to compensate for the lack of physical mechanisms in aircraft designs. This paper particularly focuses on the impact of a continuously extending or retracting wall in the chordwise direction on the evolution of inviscid Mack modes in a Mach 5.92 hypersonic boundary layer. Using the high-Reynolds-number asymptotic technique, a model is developed to quantify the morphing effect by an amplification factor, which includes both the scattering effect at the rigid-morphing junction and the successive modification of the Mack growth rate by the morphing velocity in the downstream region. Such a model enables us to conduct a comprehensive investigation across a wide parameter space defined by morphing speed and flow parameters. A critical frequency is identified near the most unstable second-mode frequency. For an extending wall, the oncoming Mack modes are suppressed for frequencies above this critical frequency and enhanced for frequencies below it. Conversely, the retracting-wall effect exhibits an inverse impact on the Mack modes. To validate the accuracy of the asymptotic predictions, the harmonic linearized Navier-Stokes calculations are performed, resulting in favorable agreements. This research sheds light on the complex interplay between wall morphing and the Mack-mode evolution, offering informative contributions to the understanding of the aerodynamic behaviors in hypersonic boundary layers. |
| 分类号 | 一类/力学重要期刊 |
| WOS研究方向 | Mechanics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001348093700027 |
| 资助机构 | National Natural Science Foundation of China10.13039/501100001809 {92371104, U20B2003, 11988102] ; NSFC {YSBR-087] ; CAS Project for Young Scientists in Basic Research {XDB0620102] ; Strategic Priority Research Program of Chinese Academy of Sciences |
| 其他责任者 | Dong M |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/97221]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 作者单位 | 1.【Jiang, Genrui】 Univ Chinese Acad Sci, Sch Engn Sci, Beijing 101408, Peoples R China 2.【Zhao, Lei】 Tianjin Univ, Dept Mech, Tianjin 300072, Peoples R China 3.【Jiang, Genrui & Dong, Ming】 Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jiang GR,Dong M,Zhao, Lei. Impact of continuously extending/retracting wall on Mack-mode evolution in hypersonic boundary layers[J]. PHYSICS OF FLUIDS,2024,36(11):114106. |
| APA | 蒋根瑞,董明,&Zhao, Lei.(2024).Impact of continuously extending/retracting wall on Mack-mode evolution in hypersonic boundary layers.PHYSICS OF FLUIDS,36(11),114106. |
| MLA | 蒋根瑞,et al."Impact of continuously extending/retracting wall on Mack-mode evolution in hypersonic boundary layers".PHYSICS OF FLUIDS 36.11(2024):114106. |
入库方式： OAI收割
来源：力学研究所
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