Revisit of the oblique-breakdown regime in supersonic boundary layers and mechanism of the extra amplification of streak modes

doi:10.1063/5.0117622

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	Revisit of the oblique-breakdown regime in supersonic boundary layers and mechanism of the extra amplification of streak modes
	Song, Runjie 1; Dong, Ming 1,2; Zhao, Lei 3
刊名	PHYSICS OF FLUIDS
	2022-10-01
卷号	34 期号:10 页码:13
ISSN号	1070-6631
DOI	10.1063/5.0117622
通讯作者	Dong, Ming(dongming@imech.ac.cn) ; Zhao, Lei(lei_zhao@tju.edu.cn)
英文摘要	In the low-Mach-number supersonic boundary layers, the oblique-breakdown regime may be the most efficient route to trigger the laminar-turbulent transition, because the most unstable Mack first mode always appears as an oblique wave. In this paper, we revisit this issue by use of the nonlinear parabolized stability equation (NPSE) approach and particularly focus on the extra amplification of the streak mode generated by the direct interaction of the introduced oblique modes. This mechanism is then well explained based on the weakly nonlinear analysis, and its predictions on the evolution of the streak mode and the two-dimensional traveling-wave mode are quantitatively confirmed by the NPSE calculations. Additionally, the important role of the streak mode, leading to the secondary instability, on triggering the transition onset is identified. Published under an exclusive license by AIP Publishing.
资助项目	NSFC Basic Science Center Program for Multiscale Problems in Nonlinear Mechanics[11988102] ; National Science Foundation of China[12002235] ; National Science Foundation of China[U20B2003] ; Strategic Priority Research Program, CAS[XDB22040104]
WOS关键词	DIRECT NUMERICAL-SIMULATION ; NONLINEAR EVOLUTION ; INSTABILITY ; TRANSITION ; WAVES ; STABILITY
WOS研究方向	Mechanics ; Physics
语种	英语
WOS记录号	WOS:000875616100006
资助机构	NSFC Basic Science Center Program for Multiscale Problems in Nonlinear Mechanics ; National Science Foundation of China ; Strategic Priority Research Program, CAS
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/90660]
专题	力学研究所_非线性力学国家重点实验室
通讯作者	Dong, Ming; Zhao, Lei
作者单位	1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China 2.Peking Univ, Sino Russian Math Ctr, Beijing 100871, Peoples R China 3.Tianjin Univ, Dept Mech, Tianjin 300072, Peoples R China
推荐引用方式 GB/T 7714	Song, Runjie,Dong, Ming,Zhao, Lei. Revisit of the oblique-breakdown regime in supersonic boundary layers and mechanism of the extra amplification of streak modes[J]. PHYSICS OF FLUIDS,2022,34(10):13.
APA	Song, Runjie,Dong, Ming,&Zhao, Lei.(2022).Revisit of the oblique-breakdown regime in supersonic boundary layers and mechanism of the extra amplification of streak modes.PHYSICS OF FLUIDS,34(10),13.
MLA	Song, Runjie,et al."Revisit of the oblique-breakdown regime in supersonic boundary layers and mechanism of the extra amplification of streak modes".PHYSICS OF FLUIDS 34.10(2022):13.