Natural Convection Flow of a Nanofluid in an Inclined Square Enclosure Partially Filled with a Porous Medium

This work analyses free convection flow of a nanofluid in an inclined square enclosure consisting of a porous layer and a nanofluid layer using the finite difference methodology. Sinusoidal temperature boundary conditions are imposed on the two opposing vertical walls. Nanofluids with water as base...

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Bibliographic Details
Published in:Scientific reports 2017-05, Vol.7 (1), p.2357-18, Article 2357
Main Authors: Alsabery, A. I., Chamkha, A. J., Saleh, H., Hashim, I.
Format: Article
Language:English
Subjects:
639/166/988
639/705/1041
639/766/189
639/925/350/354
Boundary conditions
Convection
Fluid flow
Heat transfer
Humanities and Social Sciences
multidisciplinary
Nanoparticles
Porous media
Science
Science (multidisciplinary)
Titanium dioxide
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Summary:This work analyses free convection flow of a nanofluid in an inclined square enclosure consisting of a porous layer and a nanofluid layer using the finite difference methodology. Sinusoidal temperature boundary conditions are imposed on the two opposing vertical walls. Nanofluids with water as base and Ag or Cu or Al 2 O 3 or TiO 2 nanoparticles are considered for the problem. The related parameters of this study are the Darcy number, nanoparticle volume fraction, phase deviation, amplitude ratio, porous layer thickness and the inclination angle of the cavity. A comparison with previously published work is performed and the results are in good agreement. Detailed numerical data for the fluid flow and thermal distributions inside the square enclosure, and the Nusselt numbers are presented. The obtained results show that the heat transfer is considerably affected by the porous layer increment. Several nanoparticles depicted a diversity improvement on the convection heat transfer.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-017-02241-x