Low-Dimensional Dynamical Systems for a Wake-Type Shear Flow with Vortex Dislocations

doi:10.1016/S0169-5983(03)00082-0

IMECH-IR > 力学所知识产出(1956-2008)

	Low-Dimensional Dynamical Systems for a Wake-Type Shear Flow with Vortex Dislocations
	Zhao HL(赵红亮); Ling GC(凌国灿); Zhao, HL (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100080, Peoples R China.
发表期刊	Fluid Dynamics Research
	2003
卷号	33 期号:3 页码:299-312
ISSN	0169-5983
摘要	Low-dimensional systems are constructed to investigate dynamics of vortex dislocations in a wake-type shear flow. High-resolution direct numerical simulations are employed to obtain flow snapshots from which the most energetic modes are extracted using proper orthogonal decomposition (POD). The first 10 modes are classified into two groups. One represents the general characteristics of two-dimensional wake-type shear flow, and the other is related to the three-dimensional properties or non-uniform characteristics along the span. Vortex dislocations are generated by these two kinds of coherent structures. The results from the first 20 three-dimensional POD modes show that the low- dimensional systems have captured the basic properties of the wake-type shear flow with vortex dislocation, such as two incommensurable frequencies and their beat frequency.
学科领域	力学
DOI	10.1016/S0169-5983(03)00082-0
收录类别	SCI
语种	英语
WOS记录号	WOS:000185054000003
关键词[WOS]	PROPER ORTHOGONAL DECOMPOSITION ; COHERENT STRUCTURES ; BOUNDARY-LAYER ; TRANSITION ; TURBULENCE ; CYLINDER
WOS研究方向	Mechanics ; Physics
WOS类目	Mechanics ; Physics, Fluids & Plasmas
引用统计	被引频次：2[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/311007/17367
专题	力学所知识产出(1956-2008)
通讯作者	Zhao, HL (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100080, Peoples R China.
推荐引用方式 GB/T 7714	Zhao HL,Ling GC,Zhao, HL . Low-Dimensional Dynamical Systems for a Wake-Type Shear Flow with Vortex Dislocations[J]. Fluid Dynamics Research,2003,33,3,:299-312.
APA	赵红亮,凌国灿,&Zhao, HL .(2003).Low-Dimensional Dynamical Systems for a Wake-Type Shear Flow with Vortex Dislocations.Fluid Dynamics Research,33(3),299-312.
MLA	赵红亮,et al."Low-Dimensional Dynamical Systems for a Wake-Type Shear Flow with Vortex Dislocations".Fluid Dynamics Research 33.3(2003):299-312.

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