| An asymptotic theory formulating the surface ablation impact on Mack modes in high-enthalpy hypersonic boundary layers | |
| Yuan QJ(袁庆江); Dong M(董明) | |
| Corresponding Author | Dong, Ming([email protected]) |
| Source Publication | PHYSICS OF FLUIDS
 |
| 2024-09-01 | |
| Volume | 36Issue:9Pages:19 |
| ISSN | 1070-6631 |
| Abstract | 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. |
| DOI | 10.1063/5.0227561 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:001320674900006 |
| WOS Keyword | NUMERICAL-SIMULATION ; INSTABILITY ; ROUGHNESS ; STABILITY ; RECEPTIVITY ; COMBUSTION ; TRANSITION ; SCATTERING ; SUCTION ; FLOW |
| WOS Research Area | Mechanics ; Physics |
| WOS Subject | Mechanics ; Physics, Fluids & Plasmas |
| Funding Project | 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 |
| Funding Organization | 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 |
| Classification | 一类/力学重要期刊 |
| Ranking | 1 |
| Contributor | Dong, Ming |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/96911 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China |
| Recommended Citation 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.Rp_Au:Dong, Ming |
| 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. |
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