Convection on a non-uniformly heated, rotating plane

This investigation is concerned with the convective motions in a shallow layer of silicone oil on a plane, circular copper plate which is heated at the rim and cooled at the centre and at the same time rotated around a vertical axis. The oil is in touch with a glass lid, which is cooled uniformly. W...

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Bibliographic Details
Published in:Journal of fluid mechanics 1968-09, Vol.33 (3), p.515-527
Main Author: Koschmieder, E. L.
Format: Article
Language:English
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Summary:This investigation is concerned with the convective motions in a shallow layer of silicone oil on a plane, circular copper plate which is heated at the rim and cooled at the centre and at the same time rotated around a vertical axis. The oil is in touch with a glass lid, which is cooled uniformly. With sufficient heating axially symmetric concentric rings develop. The details of the motion can be described as a superposition of a circulation due to the horizontal temperature gradient and a circulation of opposite sense due to the centrifugal force, with the motions due to the vertical instability. There seems to be a conversion into rolls whose axes point radially, if the centrifugal circulation becomes too strong.
ISSN:0022-1120
1469-7645
DOI:10.1017/S0022112068001485