Transient buoyant convection of air in an enclosure under strong magnetic effect

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A numerical study is made of transient convective cool-down of air in a cylindrical container when both gravity and magnetizing force act. The magnetizing force is generated in an inhomogeneous magnetic field for an electrically nonconducting fluid with high magnetic susceptibility. Cooling of air is accomplished by abruptly lowering the temperature of the cylindrical sidewall under a strong vertical magnetic field. Comprehensive numerical computations are obtained for ranges of pertinent external parameters. The behavior of flow and temperature fields are delineated as the radius and axial position of the electrical coil are varied. When the magnetizing force is parallel to gravity, the flow is invigorated and cool-down process is facilitated. When the magnetizing force opposes the gravity, the overall cool-down process is least effective when the strength of magnetizing force is comparable to gravity. (c) 2005 Elsevier Ltd. All rights reserved.
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Issue Date
2005-07
Language
English
Article Type
Article
Keywords

NATURAL-CONVECTION; NUMERICAL COMPUTATION; VERTICAL CYLINDER; CUBIC ENCLOSURE; FIELD; FLUID; TEMPERATURE

Citation

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, v.48, no.15, pp.3097 - 3106

ISSN
0017-9310
DOI
10.1016/j.ijheatmasstransfer.2005.02.017
URI
http://hdl.handle.net/10203/87181
Appears in Collection
ME-Journal Papers(저널논문)
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