Zonal flow induced by longitudinal librations of a rotating cylindrical cavity

F.H. Busse

    Research output: Contribution to journalArticlepeer-review

    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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