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Turbulent cascade of Kelvin Waves on vortex filaments

Lookup NU author(s): Dr Andrew Baggaley, Professor Carlo Barenghi

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Abstract

By numerically integrating in time the motion of vortex filaments, we study how the nonlinear interaction of Kelvin waves along vortices generates Kelvin waves of larger and larger wavenumbers (smaller and smaller wavelength). At sufficiently large wavenumbers the angular velocity of the vortices is large enough that kinetic energy is lost by sound emission. This turbulent cascade of Kelvin waves should explain why turbulence, generated in superfluid helium at very low temperature near absolute zero, quickly decays, despite the lack of any viscous dissipation.


Publication metadata

Author(s): Baggaley AW, Barenghi CF

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: 13th European Turbulence Conference: Vorticity Dynamics

Year of Conference: 2011

Pages: Article no. 062001

ISSN: 1742-6588

Publisher: Institute of Physics Publishing Ltd.

URL: http://dx.doi.org/10.1088/1742-6596/318/6/062001

DOI: 10.1088/1742-6596/318/6/062001

Library holdings: Search Newcastle University Library for this item

Series Title: Journal of Physics Conference Series

ISBN: 17426596


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