An asymptotic theory formulating the surface ablation impact on Mack modes in high-enthalpy hypersonic boundary layers
文献类型：期刊论文
| 作者 | Yuan QJ(袁庆江); Dong M(董明) |
| 刊名 | PHYSICS OF FLUIDS
 |
| 出版日期 | 2024-09-01 |
| 卷号 | 36期号:9页码:19 |
| ISSN号 | 1070-6631 |
| DOI | 10.1063/5.0227561 |
| 通讯作者 | Dong, Ming(dongming@imech.ac.cn) |
| 英文摘要 | Surface ablation induced by aerodynamic heating is a common phenomenon for high-speed cruising vehicles, impacting surface geometry, temperature distribution, and mass injection, all of which play crucial roles in the perturbation evolution and boundary-layer transition. This paper presents a high-Reynolds-number asymptotic theory to formulate the impact of a local surface ablation on the Mack-mode evolution in high-enthalpy hypersonic boundary layers. The mean-flow distortion induced by ablation is formulated by the compressible triple-deck formalism, incorporating the chemical non-equilibrium effect. Simultaneously, the distortion of the Mack mode is formulated by the multi-scale analysis, with an amplification factor quantifying the overall impact of the ablation. The asymptotic model distinctly separates the effects of the mean-flow distortion and the Mack instability property. The amplification factor is attributed to two main factors: a local scattering effect at the ablation region, primarily contributed by the indentation, and a successive adjustment of the Mack growth rate, mainly contributed by the temperature distribution. The study reveals that the Mack mode experiences enhancement by ablation when its frequency falls below a critical threshold but is suppressed for higher frequencies. Remarkably, the critical frequency aligns closely with the most unstable frequency within the second-mode frequency band. |
| 分类号 | 一类/力学重要期刊 |
| WOS关键词 | NUMERICAL-SIMULATION ; INSTABILITY ; ROUGHNESS ; STABILITY ; RECEPTIVITY ; COMBUSTION ; TRANSITION ; SCATTERING ; SUCTION ; FLOW |
| 资助项目 | National Natural Science Foundation of China10.13039/501100001809[U20B2003] ; National Natural Science Foundation of China10.13039/501100001809[92371104] ; National Natural Science Foundation of China10.13039/501100001809[11988102] ; NSFC[YSBR-087] ; CAS Project for Young Scientists in Basic Research[XDB0620102] ; Strategic Priority Research Program of Chinese Academy of Sciences |
| WOS研究方向 | Mechanics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001320674900006 |
| 资助机构 | National Natural Science Foundation of China10.13039/501100001809 ; NSFC ; CAS Project for Young Scientists in Basic Research ; Strategic Priority Research Program of Chinese Academy of Sciences |
| 其他责任者 | Dong, Ming |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/96910]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 作者单位 | Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yuan QJ,Dong M. An asymptotic theory formulating the surface ablation impact on Mack modes in high-enthalpy hypersonic boundary layers[J]. PHYSICS OF FLUIDS,2024,36(9):19. |
| APA | 袁庆江,&董明.(2024).An asymptotic theory formulating the surface ablation impact on Mack modes in high-enthalpy hypersonic boundary layers.PHYSICS OF FLUIDS,36(9),19. |
| MLA | 袁庆江,et al."An asymptotic theory formulating the surface ablation impact on Mack modes in high-enthalpy hypersonic boundary layers".PHYSICS OF FLUIDS 36.9(2024):19. |
入库方式： OAI收割
来源：力学研究所
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