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Lattice Boltzmann simulation of natural convection in an open enclosure subjugated to water/copper nanofluid

Citation

Kefayati, GHR and Hosseinizadeh, SF and Gorji, M and Sajjadi, H, Lattice Boltzmann simulation of natural convection in an open enclosure subjugated to water/copper nanofluid, International Journal of Thermal Sciences, 52 pp. 91-101. ISSN 1290-0729 (2012) [Refereed Article]

Copyright Statement

Copyright 2011 Elsevier Masson SAS

DOI: doi:10.1016/j.ijthermalsci.2011.09.005

Abstract

In this paper Lattice Boltzmann simulation of natural convection in an open enclosure which subjugated to water/copper nanofluid has been investigated. Calculations were performed for Rayleigh numbers (Ra=104 - 106), volume fractions of nanoparticles (0 ≤ φ ≤ 0.05) and open enclosure aspect ratios (0:5 ≤ A ≤ 2). The comparisons show that the average Nusselt number increases with augmentation of Rayleigh number and the volume fraction of nanoparticles for whole ranges of aspect ratios. The average Nusselt number decreases as the aspect ratio increases at various Rayleigh numbers and different the nanoparticle volume fractions. But generally the most effect of nanoparticles on heat transfer enhancement is observed at the aspect ratio of A = 2. Also nanoparticles influence the heat transfer less at Ra = 105 among studied Rayleigh numbers.

Item Details

Item Type:Refereed Article
Keywords:convection, nanofluid
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:128031
Year Published:2012
Web of Science® Times Cited:66
Deposited By:Engineering
Deposited On:2018-08-28
Last Modified:2018-10-15
Downloads:0

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