Coherent laminar and turbulent motion of toroidal vortex bundles

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 generalised leapfrogging of the constituent vortex rings. Despite thre...

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Bibliographic Details
Published in:arXiv.org 2014-01
Main Authors: Wacks, D H, Baggaley, A W, Barenghi, C F
Format: Article
Language:English
Subjects:
Bundles
Bundling
Computational fluid dynamics
Filaments
Fluid flow
Fluids
Helium
Kelvin waves
Superfluidity
Vortex filaments
Vortex rings
Vortices
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Summary: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 generalised 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.
ISSN:2331-8422
DOI:10.48550/arxiv.1401.6468