A NEW MECHANISM OF PERIOD DOUBLING IN FREE SHEAR FLOWS

被引：28

作者：

TOMBOULIDES, AG

TRIANTAFYLLOU, GS

KARNIADAKIS, GE

机构：

[1] PRINCETON UNIV,PROGRAM APPL & COMPUTAT MATH,PRINCETON,NJ 08543

[2] CUNY CITY COLL,BENJAMIN LAVICH INST PHYS CHEM HYDRODYNAM,NEW YORK,NY 10031

[3] CUNY CITY COLL,DEPT MECH ENGN,NEW YORK,NY 10031

来源：

PHYSICS OF FLUIDS A-FLUID DYNAMICS | 1992年 / 4卷 / 07期

关键词：

D O I：

10.1063/1.858409

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

In this Letter numerical evidence for a new period-doubling mechanism in free shear flows is presented. As a case study, the three-dimensional flow in the wake of an infinitely long circular cylinder at Reynolds number 300 is considered. It is shown that the flow in the wake doubles its period of oscillation by alternating between oscillation modes, which are identical in every respect, except from their spanwise structure. There is no merging of vortices, and the flow preserves its basic vortex-street structure.

引用

页码：1329 / 1332

页数：4

共 14 条

[1]

COUGHLIN K, 1990, THESIS HARVARD U

[2] SYMMETRY AND SYMMETRY-BREAKING BIFURCATIONS IN FLUID-DYNAMICS [J].