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Self-consistent decay of superfluid turbulence

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

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Abstract

Recent experiments have shown that the isothermal turbulent motion of helium II is very similar to classical turbulence. This regime is characterized by a strong coupling between the superfluid vortex tangle and the normal-fluid component. To study this coupled regime we develop an approach to compute the evolution of the vortex tangle. Its key feature is that it is dynamically self-consistent, unlike previous approaches, because it takes into account the back rection of the vortex tangle onto the normal fluid. We implement this approach and study a model system which, although very idealized, gives some insight into the transfer of energy between the two fluid components.

Publication metadata

Author(s): Barenghi CF, Samuels DC

Publication type: Article

Publication status: Published

Journal: Physical Review B - Condensed Matter and Materials Physics

Year: 1999

Volume: 60

Issue: 2

Pages: 1252-1260

Print publication date: 01/01/1999

ISSN (print): 0163-1829

ISSN (electronic): 1550-235X

Publisher: The American Physical Society.

URL: http://dx.doi.org/10.1103/PhysRevB.60.1252

DOI: 10.1103/PhysRevB.60.1252

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