Turbulent flows in librating ellipsoids

Benjamin Favier
Institut de Recherche sur les Phénomènes Hors Equilibre

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.

Presentation (PDF File)

Back to Workshop III: Geophysical and Astrophysical Turbulence