Kelvin waves cascade in superfluid turbulence

D. Kivotides, J. C. Vassilicos, D. C. Samuels, C. F. Barenghi

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Abstract

We study numerically the interaction of four initial superfluid vortex rings in the absence of any dissipation or friction. We find evidence for a cascade of Kelvin waves generated by individual vortex reconnection events which transfers energy to higher and higher wave numbers k. After the vortex reconnections occur, the energy spectrum scales as k−1 and the curvature spectrum becomes flat. These effects highlight the importance of Kelvin waves and reconnections in the transfer of energy within a turbulent vortex tangle.
Original languageEnglish
Pages (from-to)3080-3083
Number of pages4
JournalPhysical Review Letters
Volume86
Issue number14
DOIs
Publication statusPublished - 2 Apr 2001

Keywords

  • cascades (fluid mechanics)
  • computational fluid dynamics
  • energy transfer
  • friction
  • turbulent flow
  • vortex flow

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