Reynolds stresses – dependence on latitude

We present some results of three‐dimensional hydrodynamic simulations of a compressible flow under the influence of rotation. The code implements a three‐layer (stably–unstably–stably stratified) rectangular box placed at various latitudes in a convection zone of a star. We focus on the Reynolds stresses Q ij = 〈 u ′ i u ′ j 〉 which in mean‐field models have a crucial influence on angular momentum transport and differential rotation. Especially we examine the occurrence of a strong peak of Q θϕ at low latitude very close to the equator, which may have implications to the theory of the angular velocity profile observed on the Sun. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)