Effect of rotation on a developed turbulent stratified convection: The hydrodynamic helicity, the α effect, and the effective drift velocity Academic Article uri icon

abstract

  • Abstract An effect of rotation on a developed turbulent stratified convection is studied. Dependences of the hydrodynamic helicity, the α tensor, and the effective drift velocity of the mean magnetic field on the rate of rotation and an anisotropy of turbulent convection are found. It is shown that in an anisotropic turbulent convection the α effect can change its sign depending on the rate of rotation. The evolution of the α effect is much more complicated than that of the hydrodynamic helicity in an anisotropic turbulent convection of a rotating …

publication date

  • February 27, 2003