Features of the supercritical transition in the wake of a circular cylinder

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	Features of the supercritical transition in the wake of a circular cylinder
	Xiong J(熊俊); Ling GC(凌国灿); Zhu KQ(朱克勤)
刊名	Acta Mechanica Sinica
	2002
卷号	18 期号:6 页码:567-580
关键词	Cylinder Wake Transition Direct Numerical Simulation (Dns) Navier-Stokes Equations Spectral Element Method Dynamics Turbulence Flow
ISSN号	0567-7718
通讯作者	Xiong, J (reprint author), Tsing Hua Univ, Dept Engn Mech, Beijing 100084, Peoples R China.
中文摘要	The features of the wake behind a uniform circular cylinder at Re = 200, which is just beyond the critical Reynolds number of 3-D transition, are investigated in detail by direct numerical simulations by solving 3-D incompressible Navier-Stokes equations using mixed spectral-spectral-element method. The high-order splitting algorithm based on the mixed stiffly stable scheme is employed in the time discretization. Due to the nonlinear evolution of the secondary instability of the wake, the spanwise modes with different wavelengths emerge. The spanwise characteristic length determines the transition features and global properties of the wake. The existence of the spanwise phase difference of the primary vortices shedding is confirmed by Fourier analysis of the time series of the spanwise vorticity and attributed. to the dominant spanwise mode. The spatial energy distributions of various modes and the velocity profiles in the near wake are obtained. The numerical results indicate that the near wake is in 3-D quasi-periodic laminar state with transitional behaviors at this supercritical Reynolds number.
类目[WOS]	Engineering, Mechanical ; Mechanics
研究领域[WOS]	Engineering ; Mechanics
关键词[WOS]	NAVIER-STOKES EQUATIONS ; SPECTRAL ELEMENT METHOD ; DYNAMICS ; TURBULENCE ; FLOW
收录类别	SCI ; EI ; CSCD
语种	英语
WOS记录号	WOS:000180359200002
公开日期	2009-08-03 ; 2010-06-13
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/33659]
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	Xiong J,Ling GC,Zhu KQ. Features of the supercritical transition in the wake of a circular cylinder[J]. Acta Mechanica Sinica,2002,18(6):567-580.
APA	熊俊,凌国灿,&朱克勤.(2002).Features of the supercritical transition in the wake of a circular cylinder.Acta Mechanica Sinica,18(6),567-580.
MLA	熊俊,et al."Features of the supercritical transition in the wake of a circular cylinder".Acta Mechanica Sinica 18.6(2002):567-580.