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Appl. Sci. 2018, 8(9), 1549; https://doi.org/10.3390/app8091549

Thermophysical Analysis of Water Based (Cu–Al2O3) Hybrid Nanofluid in an Asymmetric Channel with Dilating/Squeezing Walls Considering Different Shapes of Nanoparticles

1
Department of Mathematics, Faculty of Sciences, HITEC University Taxila Cantt, Taxila 47080, Pakistan
2
Department of Mathematics, COMSATS University Islamabad, Abbottabad Campus, Islamabad 45550, Pakistan
3
Department of Mathematics, COMSATS University Islamabad, Attock Campus, Islamabad 45550, Pakistan
4
Department of Mathematics, COMSATS University Islamabad, Wah Campus, Islamabad 45550, Pakistan
*
Author to whom correspondence should be addressed.
Received: 11 June 2018 / Revised: 15 July 2018 / Accepted: 20 July 2018 / Published: 4 September 2018
(This article belongs to the Special Issue Nanofluids and Their Applications)
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Abstract

An innovative concept of water-based Cu–Al2O3 hybrid nanofluid has been employed to investigate the behavior of flow and heat transfer inside a rectangular channel whose permeable walls experiences dilation or contraction in height. The transformed set of ordinary differential equations is then solved by a well-known Runge–Kutta–Fehlberg algorithm. The analysis also includes three different shapes of copper nanocomposites, namely, platelet, cylinder and brick- shaped. The impact of various embedded parameters on the flow and heat transfer distributions have been demonstrated through the graphs. All the flow properties, temperature profile and rate of heat transfer at the walls are greatly influenced by the presence of copper nanoparticles. Furthermore, it was observed that the platelet shaped nanocomposites provide a better heat transfer ability as compared to the other shapes of nanoparticles. View Full-Text
Keywords: Cu–Al2O3/H2O hybrid nanofluid; heat transfer; shape factor; numerical results; Dilating/contracting walls Cu–Al2O3/H2O hybrid nanofluid; heat transfer; shape factor; numerical results; Dilating/contracting walls
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Saba, F.; Ahmed, N.; Khan, U.; Waheed, A.; Rafiq, M.; Mohyud-Din, S.T. Thermophysical Analysis of Water Based (Cu–Al2O3) Hybrid Nanofluid in an Asymmetric Channel with Dilating/Squeezing Walls Considering Different Shapes of Nanoparticles. Appl. Sci. 2018, 8, 1549.

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