A MODEL FOR PATTERN SELECTION IN WAKE FLOWS

被引：15

作者：

PARK, DS ^{[1
]}

REDEKOPP, LG ^{[1
]}

机构：

[1] UNIV SO CALIF,DEPT AEROSP ENGN,LOS ANGELES,CA 90089

来源：

PHYSICS OF FLUIDS A-FLUID DYNAMICS | 1992年 / 4卷 / 08期

关键词：

D O I：

10.1063/1.858390

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

A model for the selection of vortex roll-up patterns in finite-aspect-ratio, two-dimensional wakes at low to moderate Reynolds number is studied. Two primary patterns are found: a chevron pattern encompassing the entire spanwise domain and one with regions adjacent to the side-wall boundaries, which are divorced from the central region by means of dislocation layers. These patterns can be understood in terms of spanwise-propagating phase waves, wave-number shocks, and the criterion for sustained global modes. Selection criteria for the frequency and scale of internal cells in the wake behind tapered cylinders are also discussed.

引用

页码：1697 / 1706

页数：10

共 19 条

[1] A MODEL FOR THE FORMATION OF OBLIQUE SHEDDING AND CHEVRON PATTERNS IN CYLINDER WAKES [J].