SPATIAL CHARACTERISTICS OF DYNAMIC PROPERTIES OF MODULATED WAVY VORTEX FLOW IN A ROTATING COUETTE SYSTEM

被引：18

作者：

TAKEDA, Y ^{[1
]}

FISCHER, WE ^{[1
]}

KOBASHI, K ^{[1
]}

TAKADA, T ^{[1
]}

机构：

[1] KEIO UNIV,DEPT MECH ENGN,YOKOHAMA,KANAGAWA 223,JAPAN

来源：

EXPERIMENTS IN FLUIDS | 1992年 / 13卷 / 2-3期

关键词：

D O I：

10.1007/BF00218167

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Time-dependent velocity profiles V(z)(z,t) have been measured in a cylindrical Couette system for a range of Reynolds numbers corresponding to wavy vortex flow (WVF) and modulated wavy vortex flow (MWV). The spatial distribution of the power spectrum was obtained and the behaviour of the dynamic properties of WVF and MWV was investigated with respect to Reynolds number (Re) at four corners of cells (inside-outside and Inflow-Outflow). All modes of f1, f2 and B were found to be equally strong and broad at different corners for lower Re number. At large Re, however, f2 remains broad only at the outside-Inflow corner, while B is strong at Outflow. It was also found that B disappears at the outside-Inflow corner for R* > 18. These results suggest that the dynamic properties of WVF and MWV would have a spatial dependence within a cell structure scale.

引用

页码：199 / 207

页数：9

共 29 条

[1] POSSIBLE MECHANISM FOR TRANSITIONS IN WAVY TAYLOR-VORTEX FLOW [J].