Zonal flow induced by longitudinal librations of a rotating cylindrical cavity |
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| Authors: | FH Busse |
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| Institution: | Institute of Physics, University of Bayreuth, Bayreuth 95440, Germany |
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| 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. |
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| Keywords: | Rotating cylinder Libration Differential rotation Nonlinear Ekman layer |
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