Hysteresis at low Reynolds number: the onset of 2D vortex shedding

Details Hysteresis at low Reynolds number: the onset of 2D vortex shedding Hysteresis at low Reynolds number: the onset of 2D vortex shedding

1999-03-03

arxiv.org/abs/cond-mat/9903067v2

Phys.Rev.E Rapid.Comm, Vol.61, R4702 (2000)

Physics

Condensed Matter

Soft Condensed Matter

RevTeX file 4 pages + 5 (encapsulated postscript) figures. to appear in Phys.Rev.E, Rapid Communication

Scientific paper

10.1103/PhysRevE.61.R4702

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 K\'arm\'an vortex street can be hysteretic, i.e. vortices can survive at velocities lower than the velocity needed to generate them.

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