IMECH-IR  > 力学所知识产出(1956-2008)
THREE-DIMENSIONAL EVOLUTION OF VORTICES AND EARLY FEATURES OF COHERENT STRUCTURE IN THE TURBULENT WAKE BEHIND A 2-D CIRCULAR CYLINDER
Ling GC(凌国灿); Wu ZB(武作兵)
Source PublicationACTA MECHANICA SINICA
1993
Volume9Issue:3Pages:223-232
Abstract

3-D evolution of Kgrms vortex filaments and vortex filaments in braid regions in the turbulent wake of a 2-D circular cylinder is investigated numeri- cally based on inviscid vortex dynamics by analyzing the response of the initially 2-D spanwise vortex filaments to periodic spanwise disturbance of varying magnitude, wavelength and initial phase angles. Our results reveal a kind of 3-D vortex system in the wake which consists of large scale horseshoe-shaped vortices and small scale ),-shaped vortex filaments as well as vortex loops. The mechanism and the dynamic process about the generation of streamwise vortical structure and the 3-D coherent structure are reported.

KeywordThree-dimensional Evolution Coherent Structure Wake Flow
Subject Area流体力学
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Indexed ByEI
Language英语
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/49888
Collection力学所知识产出(1956-2008)
AffiliationLNM, Institute of Mechanics, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Ling GC,Wu ZB. THREE-DIMENSIONAL EVOLUTION OF VORTICES AND EARLY FEATURES OF COHERENT STRUCTURE IN THE TURBULENT WAKE BEHIND A 2-D CIRCULAR CYLINDER[J]. ACTA MECHANICA SINICA,1993,9(3):223-232.
APA Ling GC,&Wu ZB.(1993).THREE-DIMENSIONAL EVOLUTION OF VORTICES AND EARLY FEATURES OF COHERENT STRUCTURE IN THE TURBULENT WAKE BEHIND A 2-D CIRCULAR CYLINDER.ACTA MECHANICA SINICA,9(3),223-232.
MLA Ling GC,et al."THREE-DIMENSIONAL EVOLUTION OF VORTICES AND EARLY FEATURES OF COHERENT STRUCTURE IN THE TURBULENT WAKE BEHIND A 2-D CIRCULAR CYLINDER".ACTA MECHANICA SINICA 9.3(1993):223-232.
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