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Simulation of natural convection and entropy generation of non-newtonian nanofluid in an inclined cavity using buongiorno's mathematical model (part ii, entropy generation)

In this paper, entropy generation of associated with the natural convection of non-Newtonian nanofluid, using the Buongiorno's mathematical model in an inclined cavity has been analyzed by Finite Difference Lattice Boltzmann method (FDLBM). The cavity is filled with nanofluid which the mixture...

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Main Authors: Kefayatia, G. H. R., Che Sidik, Nor Azwadi
Format: Article
Published: Elsevier Science BV 2017
Subjects:
T Technology
Online Access:http://eprints.utm.my/id/eprint/66180/
http://dx.doi.org/10.1016/j.powtec.2016.10.077
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spelling my.utm.661802017-07-17T01:53:13Z http://eprints.utm.my/id/eprint/66180/ Simulation of natural convection and entropy generation of non-newtonian nanofluid in an inclined cavity using buongiorno's mathematical model (part ii, entropy generation) Kefayatia, G. H. R. Che Sidik, Nor Azwadi T Technology In this paper, entropy generation of associated with the natural convection of non-Newtonian nanofluid, using the Buongiorno's mathematical model in an inclined cavity has been analyzed by Finite Difference Lattice Boltzmann method (FDLBM). The cavity is filled with nanofluid which the mixture shows shear-thinning behavior. This study has been performed for the certain pertinent parameters of Rayleigh number (Ra = 104 and 105), inclined angle (θ = 0°,40°,80°,120°), buoyancy ratio number (Nr = 0.1, 1, and 4), power-law index (n = 0.4 − 1), Lewis number (Le = 1, 5, and 10), Thermophoresis parameter (Nt = 0.1, 0.5, 1), and Brownian motion parameter (Nb = 0.1, 1, 5). The Prandtl number is fixed at Pr = 1. The Results indicate that the augmentation of the power-law index enhances various entropy generations in different Rayleigh numbers and inclined angles. The lowest total entropy generation was observed in the inclined angle of θ = 0° in different Rayleigh numbers. In addition, the highest values of Bejan number was found in the inclined angle of θ = 0° in various Rayleigh numbers. The enhancement of the Lewis number provokes the total irreversibility to rise. Further, the total entropy generation increases as the buoyancy ratio number augments. It was shown that the increase in the Brownian motion and Thermophoresis parameters enhance the total irreversibility. Elsevier Science BV 2017-01-01 Article PeerReviewed Kefayatia, G. H. R. and Che Sidik, Nor Azwadi (2017) Simulation of natural convection and entropy generation of non-newtonian nanofluid in an inclined cavity using buongiorno's mathematical model (part ii, entropy generation). Powder Technology, 305 . pp. 679-703. ISSN 0032-5910 http://dx.doi.org/10.1016/j.powtec.2016.10.077 DOI:10.1016/j.powtec.2016.10.077
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic T Technology
spellingShingle T Technology
Kefayatia, G. H. R.
Che Sidik, Nor Azwadi
Simulation of natural convection and entropy generation of non-newtonian nanofluid in an inclined cavity using buongiorno's mathematical model (part ii, entropy generation)
description In this paper, entropy generation of associated with the natural convection of non-Newtonian nanofluid, using the Buongiorno's mathematical model in an inclined cavity has been analyzed by Finite Difference Lattice Boltzmann method (FDLBM). The cavity is filled with nanofluid which the mixture shows shear-thinning behavior. This study has been performed for the certain pertinent parameters of Rayleigh number (Ra = 104 and 105), inclined angle (θ = 0°,40°,80°,120°), buoyancy ratio number (Nr = 0.1, 1, and 4), power-law index (n = 0.4 − 1), Lewis number (Le = 1, 5, and 10), Thermophoresis parameter (Nt = 0.1, 0.5, 1), and Brownian motion parameter (Nb = 0.1, 1, 5). The Prandtl number is fixed at Pr = 1. The Results indicate that the augmentation of the power-law index enhances various entropy generations in different Rayleigh numbers and inclined angles. The lowest total entropy generation was observed in the inclined angle of θ = 0° in different Rayleigh numbers. In addition, the highest values of Bejan number was found in the inclined angle of θ = 0° in various Rayleigh numbers. The enhancement of the Lewis number provokes the total irreversibility to rise. Further, the total entropy generation increases as the buoyancy ratio number augments. It was shown that the increase in the Brownian motion and Thermophoresis parameters enhance the total irreversibility.
format Article
author Kefayatia, G. H. R.
Che Sidik, Nor Azwadi
author_facet Kefayatia, G. H. R.
Che Sidik, Nor Azwadi
author_sort Kefayatia, G. H. R.
title Simulation of natural convection and entropy generation of non-newtonian nanofluid in an inclined cavity using buongiorno's mathematical model (part ii, entropy generation)
title_short Simulation of natural convection and entropy generation of non-newtonian nanofluid in an inclined cavity using buongiorno's mathematical model (part ii, entropy generation)
title_full Simulation of natural convection and entropy generation of non-newtonian nanofluid in an inclined cavity using buongiorno's mathematical model (part ii, entropy generation)
title_fullStr Simulation of natural convection and entropy generation of non-newtonian nanofluid in an inclined cavity using buongiorno's mathematical model (part ii, entropy generation)
title_full_unstemmed Simulation of natural convection and entropy generation of non-newtonian nanofluid in an inclined cavity using buongiorno's mathematical model (part ii, entropy generation)
title_sort simulation of natural convection and entropy generation of non-newtonian nanofluid in an inclined cavity using buongiorno's mathematical model (part ii, entropy generation)
publisher Elsevier Science BV
publishDate 2017
url http://eprints.utm.my/id/eprint/66180/
http://dx.doi.org/10.1016/j.powtec.2016.10.077
_version_ 1643655780599070720
score 13.211869

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