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A damping mechanism and length scale for superfluid turbulence

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

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Abstract

Recent experiments have claimed to measure a Kolmogorov energy spectrum in the turbulent flow of helium II. A Kolmogorov spectrum requires a damping mechanism which has strong effects at small length scales but negligible effects at large length scales. We describe such a damping mechanism for helium II based on the mutual friction interaction between the normal fluid component and the superfluid quantized vortex lines. From this mechanism we have derived a damping length scale for the superfluid motion, analogous to the Kolmogorov length scale in classical turbulence.

Publication metadata

Author(s): Kivotides D, Samuels DC

Publication type: Article

Publication status: Published

Journal: Physica B: Condensed Matter

Year: 2000

Volume: 284-288

Issue: 1

Pages: 71-72

ISSN (print): 0921-4526

ISSN (electronic): 1873-2135

Publisher: Elsevier B.V.

URL: http://dx.doi.org/10.1016/S0921-4526(99)02038-4

DOI: 10.1016/S0921-4526(99)02038-4

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