Marangoni convection in rotating liquid systems
Abstract
The influence of rotational speed upon the Marangoni convection in axially independent rotating liquid systems with a free surface and an angular temperature distribution was investigated. Under the action of rotation the vortices move in the direction of the centrifugal acceleration, and exhibit increased velocity distribution and a shifting of the nodal lines of the circumferential velocity component in the direction of the centrifugal acceleration. For cases with an outside free surface, additional vortices appear in a certain Bondnumber range depending on the diameter ratio and the applied temperature distribution. Below and inside this range, the magnitude of the velocity distribution decreases, while above the increase of the velocities of the liquid is quite pronounced. This effect may indicate small rotation for crystal growth experiments, in order to minimize striations.
 Publication:

NASA STI/Recon Technical Report N
 Pub Date:
 1988
 Bibcode:
 1988STIN...8912021B
 Keywords:

 Marangoni Convection;
 Rotating Liquids;
 Velocity Distribution;
 Angular Acceleration;
 Centrifugal Force;
 Crystal Growth;
 Microgravity Applications;
 Space Commercialization;
 Temperature Distribution;
 Temperature Effects;
 Vortices;
 Fluid Mechanics and Heat Transfer