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Acceleration statistics in thermally driven superfluid turbulence

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

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Abstract

New methods of flow visualization near absolute zero have opened the way to directly compare quantum turbulence (in superfluid helium) to classical turbulence (in ordinary fluids such as air or water) and explore analogies and differences. We present results of numerical simulations in which we examine the statistics of the superfluid acceleration in thermal counterflow. We find that, unlike the velocity, the acceleration obeys scaling laws similar to classical turbulence, in agreement with a recent quantum turbulence experiment of La Mantia et al.

Publication metadata

Author(s): Baggaley AW, Barenghi CF

Publication type: Article

Publication status: Published

Journal: Physical Review E

Year: 2014

Volume: 89

Issue: 3

Print publication date: 01/03/2014

Online publication date: 10/03/2014

ISSN (print): 1539-3755

ISSN (electronic): 1550-2376

Publisher: American Physical Society

URL: http://dx.doi.org/10.1103/PhysRevE.89.033006

DOI: 10.1103/PhysRevE.89.033006

Notes: ARTN 033006

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