Title
Lattice Boltzmann simulation of magnetohydrodynamic natural convection heat transfer of Al2O3-water nanofluid in a horizontal cylindrical enclosure with an inner triangular cylinder
Abbreviated Journal Title
Int. J. Heat Mass Transf.
Keywords
Lattice Boltzmann method; Nanofluid; Brownian motion; Magnetic field; Natural convection; Triangular cylinder; DAY BOUNDARY-CONDITIONS; ROTATING POROUS DISK; MAGNETIC-FIELD; NUMERICAL-SIMULATION; MASS-TRANSFER; THERMAL-CONDUCTIVITY; VISCOUS; DISSIPATION; ENTROPY GENERATION; VARIABLE VISCOSITY; PERISTALTIC FLOW; Thermodynamics; Engineering, Mechanical; Mechanics
Abstract
In this study the lattice Boltzmann method is applied to investigate the effect of magnetic field on natural convection heat transfer of Al2O3-water nanofluid in a two-dimensional horizontal annulus. In this model, the effect of Brownian motion on the effective thermal conductivity is also considered. The effective thermal conductivity and the effective viscosity of nanofluid are calculated by KKL (Koo-Kleinstreuer-Li) correlation. The effect of nanoparticle volume fraction for the enhancement of heat transfer was examined for several sets of values of Rayleigh and Hartmann numbers. Also, a correlation of the Nusselt number with physical parameters is presented. The obtained results indicate that the value of the maximum stream function decreases with increasing Hartmann number. Furthermore, we notice that the Nusselt number has a direct relationship with the Rayleigh number: but quite the opposite is true with the Hartmann number. The obtained results indicate that the Lattice Boltzmann method with double-population is a powerful approach for the simulation of natural convection heat transfer in nanofluids in regions with curved boundaries. (C) 2014 Elsevier Ltd. All rights reserved.
Journal Title
International Journal of Heat and Mass Transfer
Volume
80
Publication Date
1-1-2015
Document Type
Article
Language
English
First Page
16
Last Page
25
WOS Identifier
ISSN
0017-9310
Recommended Citation
"Lattice Boltzmann simulation of magnetohydrodynamic natural convection heat transfer of Al2O3-water nanofluid in a horizontal cylindrical enclosure with an inner triangular cylinder" (2015). Faculty Bibliography 2010s. 6797.
https://stars.library.ucf.edu/facultybib2010/6797
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