Zonal flow induced by longitudinal librations of a rotating cylindrical cavity

F.H. Busse

Research output: Contribution to journalArticle

Abstract

Longitudinal librations represent oscillations about the axis of a rotating axisymmetric fluid filled cavity. An analytical theory is developed for the case of a cylindrical cavity in the limit when the libration frequency is small in comparison with the rotation rate, but large in comparison with the inverse of the spin-up time. It is shown that through the nonlinear advection in the Ekman layers the librations cause the fluid to rotate more slowly.
Original languageEnglish
Pages (from-to)208-211
Number of pages4
JournalPhysica D
Volume240
Issue number2
DOIs
Publication statusPublished - 15 Jan 2011

Keywords

  • rotating cylinder
  • libration
  • differential rotation
  • nonlinear Ekman layer

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