Toggle Main Menu Toggle Search

Open Access padlockePrints

Velocity spectra of superfluid turbulence

Lookup NU author(s): Dr Demosthenes Kivotides, Dr David Samuels, Professor Carlo Barenghi

Downloads

Full text for this publication is not currently held within this repository. Alternative links are provided below where available.


Abstract

We study numerically statistics of superfluid turbulence. We generate a quantized superfiuid vortex tangle driven by a realistic model of normal-fluid turbulence whose energy spectrum obeys Kolmogorov's classical k-5/3 law, where k is the wave number. We find that the resulting superfluid velocity spectrum has approximately a k-1 -dependence for wave numbers of the order of 1/δ and larger, where δ is the average intervortex spacing. This result is similar to what happens in a pure superflow. We also find that the spectrum of the total velocity field follows the classical k-5/3 law, even at temperatures low enough that the normal-fluid mass is only 5% of the total helium mass. We discuss our assumptions and results in view of recent experiments.


Publication metadata

Author(s): Kivotides D, Vassilicos CJ, Samuels DC, Barenghi CF

Publication type: Article

Publication status: Published

Journal: Europhysics Letters

Year: 2002

Volume: 57

Issue: 6

Pages: 845-851

Print publication date: 01/01/2002

ISSN (print): 0295-5075

ISSN (electronic): 1286-4854

Publisher: EDP Sciences

URL: http://dx.doi.org/10.1209/epl/i2002-00588-3

DOI: 10.1209/epl/i2002-00588-3


Altmetrics

Altmetrics provided by Altmetric


Actions

Find at Newcastle University icon    Link to this publication


Share