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Polygonal instabilities on interfacial vorticities

By Matthieu Labousse and John Bush


The final publication is available at Springer via http://dx.doi.org/10.1140/epje/i2015-15113-5International audienceWe report the results of a theoretical investigation of the stability of a toroidal vortex bound by an interface. Two distinct instability mechanisms are identified that rely on, respectively, surface tension and fluid inertia, either of which may prompt the transformation from a circular to a polygonal torus. Our results are discussed in the context of three experiments, a toroidal vortex ring, the hydraulic jump, and the hydraulic bump

Topics: [ PHYS.MECA.MEFL ] Physics [physics]/Mechanics [physics]/Mechanics of the fluids [physics.class-ph]
Publisher: HAL CCSD
Year: 2015
DOI identifier: 10.1140/epje
OAI identifier: oai:HAL:hal-01228794v1
Provided by: Hal-Diderot

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