A damping length scale for superfluid turbulence

David C. Samuels, Demosthenes Kivotides

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

We show that a damping length scale ℓsd exists for superfluid turbulence at nonzero temperatures, where the superfluid component is coupled by mutual friction to a viscous normal fluid. Superfluid vortex structures at length scales smaller than ℓsd will lose energy to the normal fluid and will be dissipated. We derive the Reynolds-number dependence of this length scale and discuss the consequences of this length scale for the possible existence of a Kolmogorov - 5/3 power law for the superfluid energy spectrum.

Original languageEnglish
Pages (from-to)5306-5309
Number of pages4
JournalPhysical Review Letters
Volume83
Issue number25
DOIs
Publication statusPublished - 20 Dec 1999

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damping
turbulence
fluids
Reynolds number
energy spectra
friction
vortices
temperature
energy

Keywords

  • superfluid
  • superfluid turbulence
  • turbulence
  • damping length
  • viscous normal fluid
  • nonzero temperatures
  • superfluid vortex structures
  • Reynolds number
  • Kolmogorov
  • superfluid energy structure

Cite this

Samuels, David C. ; Kivotides, Demosthenes. / A damping length scale for superfluid turbulence. In: Physical Review Letters. 1999 ; Vol. 83, No. 25. pp. 5306-5309.
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A damping length scale for superfluid turbulence. / Samuels, David C.; Kivotides, Demosthenes.

In: Physical Review Letters, Vol. 83, No. 25, 20.12.1999, p. 5306-5309.

Research output: Contribution to journalArticle

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