arXiv:1207.7296 [cond-mat.other]AbstractReferencesReviewsResources
Vortex-density fluctuations, energy spectra and vortical regions in superfluid turbulence
Andrew W. Baggaley, Jason Laurie, Carlo F. Barenghi
Published 2012-07-31, updated 2012-10-10Version 2
Measurements of the energy spectrum and of the vortex-density fluctuation spectrum in superfluid turbulence seem to contradict each other. Using a numerical model, we show that at each instance of time the total vortex line density can be decomposed into two parts: one formed by metastable bundles of coherent vortices, and one in which the vortices are randomly oriented. We show that the former is responsible for the observed Kolmogorov energy spectrum, and the latter for the spectrum of the vortex line density fluctuations.
Comments: 5 pages, 5 figures
Categories: cond-mat.other, physics.flu-dyn
Keywords: superfluid turbulence, vortical regions, vortex line density fluctuations, total vortex line density, kolmogorov energy spectrum
Tags: journal article
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