On shear-induced turbulence in rotating stars

S. Mathis, A. Palacios, J.-P. Zahn
2004 Astronomy and Astrophysics  
We review various prescriptions which have been proposed for the turbulent transport of matter and angular momentum in differentially rotating stellar radiation zones. A new prescription is presented for the horizontal transport associated with the anisotropic shear turbulence which is produced by the differential rotation in latitude; this 'beta-viscosity' is drawn from torque measurements in the classical Couette-Taylor experiment (Richard & Zahn 1999). Its implementation in a stellar
more » ... n code leads to enhanced mixing, as illustrated by models of a rotating main-sequence star of 1.5 solar mass.
doi:10.1051/0004-6361:20040279 fatcat:3lqbd6zzlfdhxmnxcx66iofoxq