Authors: B. Favier, A. Grannan, A.J. Barker, D. Cébron, M. Le Bars and J. Aurnou.
Abstract: Recent results demonstrating that librational forcing can drive intense motions through the elliptical instability are presented. We recover the libration induced base flow, a time-averaged zonal flow, and discuss the properties of the libration-driven elliptical instability in non-axisymmetric ellipsoidal geometry. Excitation of bulk-filling turbulence by this forcing provides a mechanism for transferring rotational energy into turbulent fluid motions and thus may play an important role in the thermal evolution and magnetohydrodynamics of rotating bodies.
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