Cylinder wakes in flowing soap films

Journal Article · Wed Sep 01 00:00:00 EDT 1999 · Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics

DOI:https://doi.org/10.1103/PhysRevE.60.2953· OSTI ID:6327144

Vorobieff, P; Ecke, R E ^[1]; Vorobieff, P ^[2]

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1. Center for Nonlinear Studies, Condensed Matter and Thermal Physics Group, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
2. Dynamic Experimentation Group, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

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. [copyright] [ital 1999] [ital The American Physical Society]

• OSTI ID: 6327144
• Journal Information: Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics, Vol. 60:3; ISSN 1063-651X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CYLINDERS
FILM FLOW
SOAPS
THIN FILMS
TURBULENCE
TURBULENT FLOW
VISCOSITY
VORTEX FLOW
VORTICES
FILMS
FLUID FLOW
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
661300* - Other Aspects of Physical Science- (1992-)