Coherent Structures in Transition of a Flat-Plate Boundary Layer at Ma=0.7

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	Coherent Structures in Transition of a Flat-Plate Boundary Layer at Ma=0.7
	Zhou Y(周莹); Li XL(李新亮); Fu DX(傅德薰)
刊名	Chinese Physics Letters
	2007
通讯作者邮箱	gzhouying@gmail.com
卷号	24 期号:1 页码:147-150
ISSN号	0256-307X
通讯作者	Zhou, Y (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 10080, Peoples R China.
中文摘要	Direct numerical simulation (DNS) of a spatially evolving flat-plate boundary layer transition process at free stream Mach number 0.7 is performed. Tollmien-Schlichting (T-S) waves are added on the inlet boundary as the disturbances before transition. Typical coherent structures in the transition process are investigated based on the second invariant of velocity gradient tensor. The instantaneous shear stress and the mean velocity profile in the transition region are studied. In our view, the fact that the peak value of shear stress in the stress concentration area increases and exceeds a threshold value during the later stage of the transition process plays an important role in the laminar breakdown process.
学科主题	力学
类目[WOS]	Physics, Multidisciplinary
研究领域[WOS]	Physics
收录类别	SCI
语种	英语
WOS记录号	WOS:000243377900040
公开日期	2007-06-15
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/16716]
专题	力学研究所_力学所知识产出(1956-2008)
推荐引用方式 GB/T 7714	Zhou Y,Li XL,Fu DX. Coherent Structures in Transition of a Flat-Plate Boundary Layer at Ma=0.7[J]. Chinese Physics Letters,2007,24(1):147-150.
APA	周莹,李新亮,&傅德薰.(2007).Coherent Structures in Transition of a Flat-Plate Boundary Layer at Ma=0.7.Chinese Physics Letters,24(1),147-150.
MLA	周莹,et al."Coherent Structures in Transition of a Flat-Plate Boundary Layer at Ma=0.7".Chinese Physics Letters 24.1(2007):147-150.