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

doi:10.1063/5.0117622

IMECH-IR > 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 RJ(宋润杰)1; Dong M(董明)1,2; Zhao, Lei 3
通讯作者	Dong, Ming(dongming@imech.ac.cn) ; Zhao, Lei(lei_zhao@tju.edu.cn)
发表期刊	PHYSICS OF FLUIDS
	2022-10-01
卷号	34 期号:10 页码:13
ISSN	1070-6631
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.
DOI	10.1063/5.0117622
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000875616100006
关键词[WOS]	DIRECT NUMERICAL-SIMULATION ; NONLINEAR EVOLUTION ; INSTABILITY ; TRANSITION ; WAVES ; STABILITY
WOS研究方向	Mechanics ; Physics
WOS类目	Mechanics ; Physics, Fluids & Plasmas
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]
项目资助者	NSFC Basic Science Center Program for Multiscale Problems in Nonlinear Mechanics ; National Science Foundation of China ; Strategic Priority Research Program, CAS
论文分区	一类/力学重要期刊
力学所作者排名	1
RpAuthor	Dong, Ming ; Zhao, Lei
引用统计	被引频次：5[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/311007/90661
专题	非线性力学国家重点实验室
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 RJ,Dong M,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	宋润杰,董明,&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	宋润杰,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.

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