TURBULENT VISCOSITY, MAGNETIC DIFFUSIVITY, AND HEAT-CONDUCTIVITY UNDER THE INFLUENCE OF ROTATION AND MAGNETIC-FIELD

The old problem of turbulent diffusion is addressed to define the infl uence of rotation and magnetic field - the usual ingredients of astrop hysical bodies - on the effective transport coefficients. Either rotat ion and magnetism produce the anisotropy and quenching. The tensorial structures of the diffusivities and their dependences on the angular v elocity and the field strength are explicitly defined. An example of a pplication of the theory to the global stellar circulation model is gi ven and the implications for cosmic dynamos are briefly discussed.