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Lookup NU author(s): Dr Luca Galantucci,
Professor Carlo Barenghi,
Dr Nick Parker,
Dr Andrew Baggaley
This is the authors' accepted manuscript of an article that has been published in its final definitive form by American Physical Society, 2021.
For re-use rights please refer to the publisher's terms and conditions.
Experiments and numerical simulations show that quantum turbulence exists in two distinct limiting regimes: Kolmogorov turbulence (which shares with classical turbulence the important property of a cascade of kinetic energy from large eddies to small eddies) and Vinen turbulence (which is more similar to a random flow). In this work, we define a mesoscale helicity for the superfluid, which, tested in numerical experiments, distinguishes the two turbulent regimes, quantifying the amount of nonlocal vortex interactions and the orientation of the vortex lines.
Author(s): Galantucci L, Barenghi CF, Parker NG, Baggaley AW
Publication type: Article
Publication status: Published
Journal: Physical Review B
Online publication date: 06/04/2021
Acceptance date: 29/03/2021
Date deposited: 06/04/2021
ISSN (electronic): 2469-9969
Publisher: American Physical Society
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