Differential rotation driven by convection in a rapidly rotating annulus
Abstract
The generation of a mean zonal flow by centrifugally driven thermal convection in a rotating annulus heated from the outside and cooled from within is investigated theoretically as well as experimentally. It is shown that the direction of the mean flow depends on the curvature of the conical surfaces bounding the fluid in the axial direction. Convex conical boundaries give rise to a prograde mean flow in the outer part and a retrograde mean flow in the inner part of the fluid annulus. The directions are reversed for concave conical boundaries. Although the parameter regime for which the theoretical results have been derived could not be realized in the experiment, semiquantitative agreement between theoretical predictions and observatioos has been found.
 Publication:

Geophysical and Astrophysical Fluid Dynamics
 Pub Date:
 1982
 DOI:
 10.1080/03091928208209005
 Bibcode:
 1982GApFD..21...59B
 Keywords:

 Annular Flow;
 Convective Heat Transfer;
 Rotating Fluids;
 Concavity;
 Convexity;
 Cooling;
 Flow Geometry;
 Linear Equations;
 Zonal Flow (Meteorology);
 Fluid Mechanics and Heat Transfer;
 ROTATION;
 CONVECTION;
 THEORY;
 LARGE SCALE CONVECTION