THERMAL SCIENCE

International Scientific Journal

Keivan Fallah

,

Atena Ghaderi

,

Nima Sedaghati Zadeh

,

Mohammad Hossein Borghei

SIMULATION OF NATURAL CONVECTION HEAT TRANSFER USING NANOFLUID IN A CONCENTRIC ANNULUS

ABSTRACT
In the present study, natural convection of nanofluids in a concentric horizontal annulus enclosure has been numerically simulated using the lattice Boltzmann method. A water-based nanofluid containing Al2O3 nanoparticle has been studied. Simulations have been carried while the Rayleigh number ranges from 103 to 105 and solid volume fraction varies between 0 and 0.04. The effects of solid volume fraction of nanofluids on hydrodynamic and thermal characteristics such as average and local Nusselt numbers, streamlines, and isotherm patterns for different values of solid volume fraction, annulus gap width ratio and Rayleigh number are investigated and discussed in detail.
KEYWORDS
natural convection, nanofluid, concentric annulus, Lattice Boltzmann Method
PAPER SUBMITTED: 2015-01-18
PAPER REVISED: 2015-04-23
PAPER ACCEPTED: 2015-05-02
PUBLISHED ONLINE: 2015-06-07
DOI REFERENCE: https://doi.org/10.2298/TSCI150118078F
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2017, VOLUME 21, ISSUE Issue 3, PAGES [1275 - 1286]
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Simulation of natural convection heat transfer using nanofluid in a concentric annulus

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence