Magnetic field effect on natural convection in a nanofluid-filled square enclosure

Ghasemi, B., Aminossadati, S. M. and Raisi, A. (2011) Magnetic field effect on natural convection in a nanofluid-filled square enclosure. International Journal of Thermal Sciences, 50 9: 1748-1756. doi:10.1016/j.ijthermalsci.2011.04.010


Author Ghasemi, B.
Aminossadati, S. M.
Raisi, A.
Title Magnetic field effect on natural convection in a nanofluid-filled square enclosure
Journal name International Journal of Thermal Sciences   Check publisher's open access policy
ISSN 1290-0729
Publication date 2011-09
Sub-type Article (original research)
DOI 10.1016/j.ijthermalsci.2011.04.010
Volume 50
Issue 9
Start page 1748
End page 1756
Total pages 9
Place of publication Cedex, France
Publisher Elsevier Masson
Collection year 2012
Language eng
Formatted abstract
This paper examines the natural convection in an enclosure that is filled with a water-Al2O3 nanofluid and is influenced by a magnetic field. The enclosure is bounded by two isothermal vertical walls at temperatures Th and Tc and by two horizontal adiabatic walls. Based upon numerical predictions, the effects of pertinent parameters such as the Rayleigh number (103 ≤ Ra ≤ 107), the solid volume fraction (0 ≤ φ{symbol} ≤ 0.06) and the Hartmann number (0 ≤ Ha ≤ 60) on the flow and temperature fields and the heat transfer performance of the enclosure are examined. Prandtl number is considered to be Pr = 6.2. The results show that the heat transfer rate increases with an increase of the Rayleigh number but it decreases with an increase of the Hartmann number. An increase of the solid volume fraction may result in enhancement or deterioration of the heat transfer performance depending on the value of Hartmann and Rayleigh numbers. © 2011 Elsevier Masson SAS. All rights reserved.
Keyword Enclosure
Magnetic field
Nanofluids
Natural convection
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
Official 2012 Collection
 
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Created: Fri, 17 Jun 2011, 13:55:53 EST by Dr Saiied Aminossadati on behalf of School of Mechanical and Mining Engineering