Direct Numerical Simulation of Supersonic Turbulent Boundary Layer Flow

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	Direct Numerical Simulation of Supersonic Turbulent Boundary Layer Flow
	Gao H(高慧); Fu DX(傅德薰); Ma YW(马延文); Li XL(李新亮)
刊名	Chinese Physics Letters
	2005
通讯作者邮箱	gaohui66@sohu.com
卷号	22 期号:7 页码:1709-1712
ISSN号	0256-307X
通讯作者	Gao, H (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100080, Peoples R China.
中文摘要	Direct numerical simulations of a spatially evolving supersonic flat-plate turbulent boundary layer flow with free Mach number M = 2.25 and Reynolds number Re = 365000/in are performed. The transition process from laminar to turbulent flow is obtained by solving the three-dimensional compressible Navier-Stokes, equations, using high-order accurate difference schemes. The obtained statistical results agree well with the experimental and theoretical data. From the numerical results it can be seen that the transition process under the considered conditions is the process which skips the Tolimien-Schlichting instability and the second instability through the instability of high gradient shear layer and becomes of laminar flow breakdown. This means that the transition process is a bypass-type transition process. The spanwise asymmetry of the disturbance locally upstream imposed is important to induce the bypass-type transition. Furthermore, with increasing the time disturbance frequency the transition will delay. When the time disturbance frequency is large enough, the transition will disappear.
学科主题	力学
类目[WOS]	Physics, Multidisciplinary
研究领域[WOS]	Physics
关键词[WOS]	INSTABILITY
收录类别	SCI
语种	英语
WOS记录号	WOS:000230529000041
公开日期	2007-06-15 ; 2007-12-05 ; 2009-06-23
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/16915]
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	Gao H,Fu DX,Ma YW,et al. Direct Numerical Simulation of Supersonic Turbulent Boundary Layer Flow[J]. Chinese Physics Letters,2005,22(7):1709-1712.
APA	高慧,傅德薰,马延文,&李新亮.(2005).Direct Numerical Simulation of Supersonic Turbulent Boundary Layer Flow.Chinese Physics Letters,22(7),1709-1712.
MLA	高慧,et al."Direct Numerical Simulation of Supersonic Turbulent Boundary Layer Flow".Chinese Physics Letters 22.7(2005):1709-1712.