Turbulence without inertia in thermally excited superfluids

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Abstract

Numerical calculations of 4He-II hydrodynamics show that a dense tangle of superfluid vortices induces in an initially stationary normal fluid a highly dissipative, complex, vortical flow pattern ("turbulence") with k-2.2 energy spectrum scaling and fluctuations Reynolds number of order unity. In this normal fluid flow the effects of mutual friction excitation from the superfluid vortices and those of viscous stresses are of the same order.

Original languageEnglish
Pages (from-to)193-197
Number of pages5
JournalPhysics Letters A
Volume341
Issue number1-4
DOIs
Publication statusPublished - 20 Jun 2005

Keywords

  • superfluid vortices
  • vortical flow pattern
  • turbulence
  • thermally excited superfluid (TES)

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