Receptivity of Mack modes to localized unsteady blowing and suction in a chemical non-equilibrium hypersonic boundary layer

doi:10.1007/s10409-023-23485-x

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	Receptivity of Mack modes to localized unsteady blowing and suction in a chemical non-equilibrium hypersonic boundary layer
	Yuan QJ(袁庆江); Song RJ(宋润杰); Dong M(董明)
通讯作者	Song, Runjie([email protected]) ; Dong, Ming([email protected])
发表期刊	ACTA MECHANICA SINICA
	2024-07-01
卷号	40 期号:7 页码:18
ISSN	0567-7718
摘要	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.
关键词	Chemical non-equilibrium flow Boundary-layer instability Hypersonic Receptivity Transition to turbulence
DOI	10.1007/s10409-023-23485-x
收录类别	SCI ; EI ; CSCD
语种	英语
WOS记录号	WOS:001235306500002
关键词[WOS]	TRANSITION ; STABILITY ; FLOW
WOS研究方向	Engineering ; Mechanics
WOS类目	Engineering, Mechanical ; Mechanics
资助项目	National Science Foundation of China[U20B2003] ; National Science Foundation of China[11988102] ; National Science Foundation of China[12302292]
项目资助者	National Science Foundation of China
论文分区	二类/Q1
力学所作者排名	1
RpAuthor	Song, Runjie ; Dong, Ming
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/95511
专题	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,Song RJ,Dong M. 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.Rp_Au:Song, Runjie, Dong, Ming
APA	袁庆江,宋润杰,&董明.(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	袁庆江,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.