| Receptivity of Mack modes to localized unsteady blowing and suction in a chemical non-equilibrium hypersonic boundary layer | |
| Yuan, Qingjiang; Song, Runjie; Dong, Ming | |
| Corresponding Author | Song, Runjie(songrunjie@imech.ac.cn) ; Dong, Ming(dongming@imech.ac.cn) |
| Source Publication | ACTA MECHANICA SINICA
 |
| 2024-07-01 | |
| Volume | 40Issue:7Pages:18 |
| ISSN | 0567-7718 |
| Abstract | This paper studies the local receptivity of the Mack-mode instability to localized unsteady blowing and suction (UBS) in a chemical non-equilibrium (CNE) hypersonic boundary layer. The five-species CNE model is employed, and the receptivity efficiency is formulated by use of the residual theorem. Compared with the results for the calorically perfect gas (CPG) model, we find that the real-gas effect enhances the receptivity efficiency remarkably in the majority of the second-mode frequency band, and the enhancement is mainly attributed to the modification of the base flow due to the CNE effect, which is akin to the cold-wall effect in hypersonic boundary layers. Combined with the destabilizing role of the CNE effect on the Mack second mode, it is concluded that the CNE effect would lead to a greater linearly accumulated perturbation amplitude, implying premature of transition to turbulence in a high-enthalpy hypersonic boundary layer subject to localized perturbations. |
| Keyword | Chemical non-equilibrium flow Boundary-layer instability Hypersonic Receptivity Transition to turbulence |
| DOI | 10.1007/s10409-023-23485-x |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:001235306500002 |
| WOS Keyword | TRANSITION ; STABILITY ; FLOW |
| WOS Research Area | Engineering ; Mechanics |
| WOS Subject | Engineering, Mechanical ; Mechanics |
| Funding Project | National Science Foundation of China[U20B2003] ; National Science Foundation of China[11988102] ; National Science Foundation of China[12302292] |
| Funding Organization | National Science Foundation of China |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/95511 |
| Collection | 非线性力学国家重点实验室 |
| Corresponding Author | Song, Runjie; Dong, Ming |
| Affiliation | Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China |
| Recommended Citation GB/T 7714 | Yuan, Qingjiang,Song, Runjie,Dong, Ming. Receptivity of Mack modes to localized unsteady blowing and suction in a chemical non-equilibrium hypersonic boundary layer[J]. ACTA MECHANICA SINICA,2024,40,7,:18. |
| APA | Yuan, Qingjiang,Song, Runjie,&Dong, Ming.(2024).Receptivity of Mack modes to localized unsteady blowing and suction in a chemical non-equilibrium hypersonic boundary layer.ACTA MECHANICA SINICA,40(7),18. |
| MLA | Yuan, Qingjiang,et al."Receptivity of Mack modes to localized unsteady blowing and suction in a chemical non-equilibrium hypersonic boundary layer".ACTA MECHANICA SINICA 40.7(2024):18. |
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