On the large-scale dynamics of rapidly rotating convection zones
Abstract
The fact that the values of the eight basic waves present in turbulent flows in the presence of rotation prohibit a tilt of eddy towards the axis of rotation is incorporated into a formalism for rapidly rotating convection zones. Equations for turbulent velocities are defined in a rotating coordinate system, assuming that gravity and grad delta T act in a radial direction. An expression is derived for the lifetime of a basic wave and then for the average velocity vector. A real convective eddy is formulated and the wave vectors are calculated. The velocity amplitude and the stress tensor amplitude are integrated over the eddy domain. Applied to the solar convective zone, it is found that the convective cells are aligned along the axis of rotation at the poles and at the equator, a model that conflicts with nonrotating mixng length theory predictions.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- June 1983
- DOI:
- 10.1086/161075
- Bibcode:
- 1983ApJ...269..671D
- Keywords:
-
- Convective Flow;
- Magnetohydrodynamic Turbulence;
- Stellar Models;
- Stellar Rotation;
- Flow Velocity;
- Magnetohydrodynamic Flow;
- Mixing Length Flow Theory;
- Solar Granulation;
- Stellar Structure;
- Stellar Temperature;
- Astrophysics