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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) | |
发表期刊 | ACTA MECHANICA SINICA |
1993 | |
卷号 | 9期号:3页码:223-232 |
摘要 | 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. |
关键词 | Three-dimensional Evolution Coherent Structure Wake Flow |
学科领域 | 流体力学 |
URL | 查看原文 |
收录类别 | EI |
语种 | 英语 |
文献类型 | 期刊论文 |
条目标识符 | http://dspace.imech.ac.cn/handle/311007/49888 |
专题 | 力学所知识产出(1956-2008) |
作者单位 | LNM, Institute of Mechanics, Chinese Academy of Sciences |
推荐引用方式 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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