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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 |
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Keywords: | MHD, convection |
Research Division: | Engineering |
Research Group: | Fluid mechanics and thermal engineering |
Research Field: | Experimental methods in fluid flow, heat and mass transfer |
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: | 43 |
Deposited By: | Engineering |
Deposited On: | 2018-08-10 |
Last Modified: | 2018-09-11 |
Downloads: | 0 |
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