Hysteresis at low Reynolds number: onset of two-dimensional vortex shedding

Hysteresis has been observed in a study of the transition between laminar flow and vortex shedding in a quasi-two-dimensional system. The system is a vertical, rapidly flowing soap film which is penetrated by a rod oriented perpendicular to the film plane. Our experiments show that the transition fr...

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Bibliographic Details
Published in:Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics Statistical physics, plasmas, fluids, and related interdisciplinary topics, 2000-05, Vol.61 (5A), p.R4702-R4705
Main Authors: Horvath, VK, Cressman, JR, Goldburg, WI, Wu, XL
Format: Article
Language:English
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Summary:Hysteresis has been observed in a study of the transition between laminar flow and vortex shedding in a quasi-two-dimensional system. The system is a vertical, rapidly flowing soap film which is penetrated by a rod oriented perpendicular to the film plane. Our experiments show that the transition from laminar flow to a periodic von Karman vortex street can be hysteretic, i.e., vortices can survive at velocities lower than the velocity needed to generate them.
ISSN:1063-651X
1095-3787
DOI:10.1103/PhysRevE.61.R4702