THERMAL SCIENCE

International Scientific Journal

INVESTIGATION OF MAGNETOHYDRODYNAMICS FLOW AND HEAT TRANSFER IN THE PRESENCE OF A CONFINED SQUARE CYLINDER USING SM82 EQUATIONS

ABSTRACT
In this paper, magnetohydrodynamics flow and heat transfer of a liquid metal (GaInSn) in the presence of a confined square obstacle is studied numerically, using a quasi-2-D model known as SM82. The results of the present investigation are compared with the results of the other experimental investigations and a good agreement with the average deviation of about 2.8% is achieved. The effects of Reynolds number, Hartmann number, and blockage ratio on the re-circulation length, Strouhal number, averaged Nusselt number, and isotherms are examined. The numerical results indicate that based on the Reynolds and Hartmann numbers in a fixed blockage ratio, due to the direct interactions of the secondary vortices and the Karman ones, the Strouhal number may increase or decrease. Some correlations are also provided to determine the re-circulation length in terms of the Reynolds and Hartmann numbers for various blockage ratios.
KEYWORDS
PAPER SUBMITTED: 2014-03-13
PAPER REVISED: 2015-01-27
PAPER ACCEPTED: 2015-03-29
PUBLISHED ONLINE: 2015-05-03
DOI REFERENCE: https://doi.org/10.2298/TSCI140313048F
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2017, VOLUME 21, ISSUE 2, PAGES [889 - 899]
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© 2017 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence