Cylinder wakes in flowing soap films

被引：36

作者：

Vorobieff, P ^{[1
]}

Ecke, RE

机构：

[1] Univ Calif Los Alamos Natl Lab, Ctr Nonlinear Studies, Condensed Matter & Thermal Phys Grp, Los Alamos, NM 87545 USA

[2] Univ Calif Los Alamos Natl Lab, Dynam Experimentat Grp, Los Alamos, NM 87545 USA

来源：

PHYSICAL REVIEW E | 1999年 / 60卷 / 03期

关键词：

D O I：

10.1103/PhysRevE.60.2953

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

We present an experimental characterization of cylinder wakes in flowing soap films. From instantaneous velocity and thickness fields, we find the vortex-shedding frequency, mean-flow velocity, and mean-film thickness. Using the empirical relationship between the Reynolds and Strouhal numbers obtained for cylinder wakes in three dimensions, we estimate the effective soap-film viscosity and its dependence on film thickness. We also compare the decay of vorticity with that in a simple Rankine vortex model with a dissipative term to account for air drag. [S1063-651X(99)05509-9].

引用

页码：2953 / 2956

页数：4

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