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ISSN Online: 2377-424X

ISBN Print: 978-1-56700-421-2

International Heat Transfer Conference 15
August, 10-15, 2014, Kyoto, Japan

Numerical Investigation of Benard-Marangoni Convection of Paramagnetic Liquid in Annular Layers

Get access (open in a dialog) DOI: 10.1615/IHTC15.hte.009974
pages 3911-3923

摘要

The present study considers convection of a paramagnetic fluid in the presence of a gradient magnetic field. Linear stability analyses and non-linear direct computations are conducted for the Bénard-Marangoni convection within an annular liquid layer sustained by surface tension around a cylinder in the absence of gravitational force but in presence of an azimuthal magnetic field. A surface of the cylinder is kept at a constant temperature while a liquid surface is kept at a lower temperature than that of the cylinder surface. The azimuthal magnetic field generated by an electric current through the central axis of the cylinder is taken into account in order to control the heat transfer of the paramagnetic liquid convection. In this configuration, combined convection takes place owing to the radial magnetizing force and the Marangoni effect acting at the liquid surface. The Bénard-Marangoni convection of the paramagnetic liquid can be enhanced by use of the magnetizing force.