Abstract
The angular momentum transport in rotating turbulent convection is simulated with the NIRVANA code for Taylor numbers up to 106. The box consists of an unstable layer embedded in two stable overshoot layers. We find the expected anisotropies in the rotating anisotropic turbulence field: 〈u′2r〉 exceeds 〈u′2ϕ〉, and 〈u′2ϕ〉 exceeds 〈u′2θ〉. The resulting radial angular momentum transport is directed inwards and peaks in the middle of the convective layer. The resulting latitudinal angular momentum transport is equatorwards, peaks at the surface and is highly concentrated to the equatorial region. Apart from a factor of 2–3 the total amplitudes of the cross-correlations are of the same order of magnitude. In the lower overshoot region (‘tachocline’) the cross-correlations are negative. It is argued that the concentration of the latitudinal angular momentum transport towards the surface and towards the equator does not too strongly reduce its potential to produce rotation laws with accelerated equators. (© 2005 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
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