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Coherent laminar and turbulent motion of toroidal vortex bundles

Lookup NU author(s): Dr Daniel Wacks, Dr Andrew BaggaleyORCiD, Professor Carlo Barenghi

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This is the authors' accepted manuscript of an article that has been published in its final definitive form by American Institute of Physics, 2014.

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Abstract

Motivated by experiments performed in superfluid helium, we study numerically the motion of toroidal bundles of vortex filaments in an inviscid fluid. We find that the evolution of these large-scale vortex structures involves the generalized leapfrogging of the constituent vortex rings. Despite three dimensional perturbations in the form of Kelvin waves and vortex reconnections, toroidal vortex bundles retain their coherence over a relatively large distance (compared to their size), in agreement with experimental observations. (C) 2014 AIP Publishing LLC.

Publication metadata

Author(s): Wacks DH, Baggaley AW, Barenghi CF

Publication type: Article

Publication status: Published

Journal: Physics of Fluids

Year: 2014

Volume: 26

Print publication date: 01/02/2014

Online publication date: 07/02/2014

Acceptance date: 27/01/2014

Date deposited: 08/11/2015

ISSN (print): 1070-6631

ISSN (electronic): 1089-7666

Publisher: American Institute of Physics

URL: http://dx.doi.org/10.1063/1.4864659

DOI: 10.1063/1.4864659

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