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Flow and heat transfer past a permeable stretching/shrinking sheet in Cu-Al2O3/water hybrid nanofluid

Purpose: The purpose of this paper is to study the flow and heat transfer of a hybrid nanofluid, Cu–Al2O3/water, past a permeable stretching/shrinking sheet. The effects of Brownian motion and thermophoresis are considered here. Design/methodology/approach: Similarity transformations are used to red...

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Main Authors: Yahaya, Rusya Iryanti, M. Arifin, Norihan, Nazar, Roslinda, Pop, Ioan
Format: Article
Language:English
Published: Emerald 2020
Online Access:http://psasir.upm.edu.my/id/eprint/89042/1/NANO.pdf
http://psasir.upm.edu.my/id/eprint/89042/
https://www.emerald.com/insight/content/doi/10.1108/HFF-05-2019-0441/full/html
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spelling my.upm.eprints.890422021-09-21T08:15:56Z http://psasir.upm.edu.my/id/eprint/89042/ Flow and heat transfer past a permeable stretching/shrinking sheet in Cu-Al2O3/water hybrid nanofluid Yahaya, Rusya Iryanti M. Arifin, Norihan Nazar, Roslinda Pop, Ioan Purpose: The purpose of this paper is to study the flow and heat transfer of a hybrid nanofluid, Cu–Al2O3/water, past a permeable stretching/shrinking sheet. The effects of Brownian motion and thermophoresis are considered here. Design/methodology/approach: Similarity transformations are used to reduce the governing partial differential equations to a system of ordinary (similarity) differential equations. A MATLAB solver called the bvp4c is then used to compute the numerical solutions of equations (12) to (14) subject to the boundary conditions of equation (15). Then, the effects of various physical parameters on the flow and thermal fields of the hybrid nanofluid are analyzed. Findings: Multiple (dual) solutions are found for the basic boundary layer equations. A stability analysis is performed to see which solutions are stable and, therefore, applicable in practice and which are not stable. Besides that, a comparison is made between the hybrid nanofluid and a traditional nanofluid, Cu/water. The skin friction coefficient and Nusselt number of the hybrid nanofluid are found to be greater than that of the other nanofluid. Thus, the hybrid nanofluid has a higher heat transfer rate than the other nanofluid. However, the increase in the shrinking parameter reduces the velocity of the hybrid nanofluid. Originality/value: The present results are original and new for the study of the flow and heat transfer past a permeable stretching/shrinking sheet in Cu–Al2O3/water hybrid nanofluid. Emerald 2020 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/89042/1/NANO.pdf Yahaya, Rusya Iryanti and M. Arifin, Norihan and Nazar, Roslinda and Pop, Ioan (2020) Flow and heat transfer past a permeable stretching/shrinking sheet in Cu-Al2O3/water hybrid nanofluid. International Journal of Numerical Methods for Heat and Fluid Flow, 30 (3). 1197 - 1222. ISSN 0961-5539 https://www.emerald.com/insight/content/doi/10.1108/HFF-05-2019-0441/full/html 10.1108/HFF-05-2019-0441
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description Purpose: The purpose of this paper is to study the flow and heat transfer of a hybrid nanofluid, Cu–Al2O3/water, past a permeable stretching/shrinking sheet. The effects of Brownian motion and thermophoresis are considered here. Design/methodology/approach: Similarity transformations are used to reduce the governing partial differential equations to a system of ordinary (similarity) differential equations. A MATLAB solver called the bvp4c is then used to compute the numerical solutions of equations (12) to (14) subject to the boundary conditions of equation (15). Then, the effects of various physical parameters on the flow and thermal fields of the hybrid nanofluid are analyzed. Findings: Multiple (dual) solutions are found for the basic boundary layer equations. A stability analysis is performed to see which solutions are stable and, therefore, applicable in practice and which are not stable. Besides that, a comparison is made between the hybrid nanofluid and a traditional nanofluid, Cu/water. The skin friction coefficient and Nusselt number of the hybrid nanofluid are found to be greater than that of the other nanofluid. Thus, the hybrid nanofluid has a higher heat transfer rate than the other nanofluid. However, the increase in the shrinking parameter reduces the velocity of the hybrid nanofluid. Originality/value: The present results are original and new for the study of the flow and heat transfer past a permeable stretching/shrinking sheet in Cu–Al2O3/water hybrid nanofluid.
format Article
author Yahaya, Rusya Iryanti
M. Arifin, Norihan
Nazar, Roslinda
Pop, Ioan
spellingShingle Yahaya, Rusya Iryanti
M. Arifin, Norihan
Nazar, Roslinda
Pop, Ioan
Flow and heat transfer past a permeable stretching/shrinking sheet in Cu-Al2O3/water hybrid nanofluid
author_facet Yahaya, Rusya Iryanti
M. Arifin, Norihan
Nazar, Roslinda
Pop, Ioan
author_sort Yahaya, Rusya Iryanti
title Flow and heat transfer past a permeable stretching/shrinking sheet in Cu-Al2O3/water hybrid nanofluid
title_short Flow and heat transfer past a permeable stretching/shrinking sheet in Cu-Al2O3/water hybrid nanofluid
title_full Flow and heat transfer past a permeable stretching/shrinking sheet in Cu-Al2O3/water hybrid nanofluid
title_fullStr Flow and heat transfer past a permeable stretching/shrinking sheet in Cu-Al2O3/water hybrid nanofluid
title_full_unstemmed Flow and heat transfer past a permeable stretching/shrinking sheet in Cu-Al2O3/water hybrid nanofluid
title_sort flow and heat transfer past a permeable stretching/shrinking sheet in cu-al2o3/water hybrid nanofluid
publisher Emerald
publishDate 2020
url http://psasir.upm.edu.my/id/eprint/89042/1/NANO.pdf
http://psasir.upm.edu.my/id/eprint/89042/
https://www.emerald.com/insight/content/doi/10.1108/HFF-05-2019-0441/full/html
_version_ 1712286748629794816
score 13.211869

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