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FDLBM simulation of magnetic field effect on natural convection of non-Newtonian power-law fluids in a linearly heated cavity

Citation

Kefayati, GHR, FDLBM simulation of magnetic field effect on natural convection of non-Newtonian power-law fluids in a linearly heated cavity, Powder Technology, 256 pp. 87-99. ISSN 0032-5910 (2014) [Refereed Article]

Copyright Statement

Copyright 2014 Elsevier B.V.

DOI: doi:10.1016/j.powtec.2014.02.014

Abstract

In this paper, the effect of a magnetic field on natural convection of non-Newtonian power-law fluids in a cavity with a linearly heated wall has been analyzed by Finite Difference Lattice Boltzmann method (FDLBM). This study has been performed for the certain pertinent parameters of Rayleigh number (Ra=104and 105), Hartmann number (Ha=0, 15, 30 and 60) and power-law index (n=0.5-1.5) as the magnetic field is applied horizontally. Results indicate that the augmentation of the power-law index in the absence of the magnetic field causes heat transfer to drop. The magnetic field decreases heat transfer in different power-law indexes generally. The increment of the magnetic field power declines the effect of the power-law index on heat transfer. The magnetic field for various Hartmann numbers at Ra=104provokes heat transfer to increase with the enhancement of power-law index. At Ra=105, the heat transfer falls with the rise of the power-law index for Ha=15 and 30 as the effect is weakened by the increase of Hartmann number significantly. However, the increase in power-law index augments heat transfer at Ha=60. © 2014 Elsevier B.V.

Item Details

Item Type:Refereed Article
Keywords:MHD, convection
Research Division:Engineering
Research Group:Interdisciplinary Engineering
Research Field:Heat and Mass Transfer Operations
Objective Division:Energy
Objective Group:Energy Transformation
Objective Field:Energy Transformation not elsewhere classified
UTAS Author:Kefayati, GHR (Dr Gholamreza Kefayati)
ID Code:127729
Year Published:2014
Web of Science® Times Cited:37
Deposited By:Engineering
Deposited On:2018-08-10
Last Modified:2018-09-11
Downloads:0

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