Generation of large-scale vortex dislocations in a three-dimensional wake-type flow

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	Generation of large-scale vortex dislocations in a three-dimensional wake-type flow
	Ling GC(凌国灿); Xiong ZM(熊忠民)
刊名	Science in China Series A-Mathematics Physics Astronomy
	2001
卷号	44 期号:12 页码:1585-1595
ISSN号	1006-9283
通讯作者	Ling, GC (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100080, Peoples R China.
中文摘要	Numerical study of three-dimensional evolution of wake-type flow and vortex dislocations is performed by using a compact finite diffenence-Fourier spectral method to solve 3-D incompressible Navier-Stokes equations. A local spanwise nonuniformity in momentum defect is imposed on the incoming wake-type flow. The present numerical results have shown that the flow instability leads to three-dimensional vortex streets, whose frequency, phase as well as the strength vary with the span caused by the local nonuniformity. The vortex dislocations are generated in the nonuniform region and the large-scale chain-like vortex linkage structures in the dislocations are shown. The generation and the characteristics of the vortex dislocations are described in detail.
学科主题	力学
类目[WOS]	Mathematics, Applied ; Mathematics
研究领域[WOS]	Mathematics
关键词[WOS]	COMPACT FINITE-DIFFERENCE ; LOW REYNOLDS-NUMBERS ; CIRCULAR-CYLINDER ; STABILITY ANALYSIS ; TRANSITION ; DYNAMICS ; TURBULENCE ; VORTICES
收录类别	SCI
语种	英语
WOS记录号	WOS:000175029200011
公开日期	2007-06-15
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/16211]
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	Ling GC,Xiong ZM. Generation of large-scale vortex dislocations in a three-dimensional wake-type flow[J]. Science in China Series A-Mathematics Physics Astronomy,2001,44(12):1585-1595.
APA	凌国灿,&熊忠民.(2001).Generation of large-scale vortex dislocations in a three-dimensional wake-type flow.Science in China Series A-Mathematics Physics Astronomy,44(12),1585-1595.
MLA	凌国灿,et al."Generation of large-scale vortex dislocations in a three-dimensional wake-type flow".Science in China Series A-Mathematics Physics Astronomy 44.12(2001):1585-1595.