Water-based copper-alumina hybrid nanofluid flows over a stretchin/shrinking sheet with dual solutions

Hybrid nanofluid has many real-world applications. Previous studies found hybrid nanofluid possesses better heat transfer efficiency compared to nanofluid with a single type of nanoparticle. However, the characteristics of boundary layer flow and heat transfer rate involving hybrid nanofluid could b...

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Main Author:	Asghar, Adnan
Format:	Thesis
Language:	eng eng eng
Published:	2024
Subjects:	QC Physics
Online Access:	https://etd.uum.edu.my/11185/1/depositpermission.pdf https://etd.uum.edu.my/11185/2/s904028_01.pdf https://etd.uum.edu.my/11185/3/s904028_02.pdf
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record_format	uketd_dc
spelling	my-uum-etd.111852024-06-23T03:01:50Z Water-based copper-alumina hybrid nanofluid flows over a stretchin/shrinking sheet with dual solutions 2024 Asghar, Adnan Ying, Teh Yuan Awang Had Salleh Graduate School of Arts & Sciences Awang Had Salleh Graduate School of Arts And Sciences QC Physics Hybrid nanofluid has many real-world applications. Previous studies found hybrid nanofluid possesses better heat transfer efficiency compared to nanofluid with a single type of nanoparticle. However, the characteristics of boundary layer flow and heat transfer rate involving hybrid nanofluid could be further explored using different geometries and physical assumptions in higher-dimensional space. There are dual solutions to these fluid problems due to the nonlinearity of the governing equations. Nevertheless, solutions are difficult to obtain experimentally. Therefore, the main objective of this study is to examine all possible solutions to five new water-based copper-alumina hybrid nanofluid flow problems numerically, which involved vertical exponential, power-law, and linear rotating stretching/shrinking sheet. The hybrid nanofluid flow problems in this study have been governed by systems of nonlinear partial differential equations, which were then transformed into their corresponding systems of higher-order nonlinear ordinary differential equations using suitable similarity variables. The systems were then solved numerically. The numerical findings for all five problems were found to agree with those existing solutions in the literature. The effects of physical parameters on reduced skin friction, reduced heat transfer, velocity profile, and temperature profile have been established. Findings also revealed that there were distinct zones for dual, unique, and no solutions for each problem. In conclusion, the addition of hybrid nanoparticles boosted the heat transfer rate of the water-based hybrid nanofluid flow. The findings of this study can serve as a guide to lower the cost of experiments in relevant fields of application. 2024 Thesis https://etd.uum.edu.my/11185/ https://etd.uum.edu.my/11185/1/depositpermission.pdf text eng 2026-08-08 staffonly https://etd.uum.edu.my/11185/2/s904028_01.pdf text eng 2026-08-08 staffonly https://etd.uum.edu.my/11185/3/s904028_02.pdf text eng staffonly phd doctoral Universiti Utara Malaysia
institution	Universiti Utara Malaysia
collection	UUM ETD
language	eng eng eng
advisor	Ying, Teh Yuan
topic	QC Physics
spellingShingle	QC Physics Asghar, Adnan Water-based copper-alumina hybrid nanofluid flows over a stretchin/shrinking sheet with dual solutions
description	Hybrid nanofluid has many real-world applications. Previous studies found hybrid nanofluid possesses better heat transfer efficiency compared to nanofluid with a single type of nanoparticle. However, the characteristics of boundary layer flow and heat transfer rate involving hybrid nanofluid could be further explored using different geometries and physical assumptions in higher-dimensional space. There are dual solutions to these fluid problems due to the nonlinearity of the governing equations. Nevertheless, solutions are difficult to obtain experimentally. Therefore, the main objective of this study is to examine all possible solutions to five new water-based copper-alumina hybrid nanofluid flow problems numerically, which involved vertical exponential, power-law, and linear rotating stretching/shrinking sheet. The hybrid nanofluid flow problems in this study have been governed by systems of nonlinear partial differential equations, which were then transformed into their corresponding systems of higher-order nonlinear ordinary differential equations using suitable similarity variables. The systems were then solved numerically. The numerical findings for all five problems were found to agree with those existing solutions in the literature. The effects of physical parameters on reduced skin friction, reduced heat transfer, velocity profile, and temperature profile have been established. Findings also revealed that there were distinct zones for dual, unique, and no solutions for each problem. In conclusion, the addition of hybrid nanoparticles boosted the heat transfer rate of the water-based hybrid nanofluid flow. The findings of this study can serve as a guide to lower the cost of experiments in relevant fields of application.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Asghar, Adnan
author_facet	Asghar, Adnan
author_sort	Asghar, Adnan
title	Water-based copper-alumina hybrid nanofluid flows over a stretchin/shrinking sheet with dual solutions
title_short	Water-based copper-alumina hybrid nanofluid flows over a stretchin/shrinking sheet with dual solutions
title_full	Water-based copper-alumina hybrid nanofluid flows over a stretchin/shrinking sheet with dual solutions
title_fullStr	Water-based copper-alumina hybrid nanofluid flows over a stretchin/shrinking sheet with dual solutions
title_full_unstemmed	Water-based copper-alumina hybrid nanofluid flows over a stretchin/shrinking sheet with dual solutions
title_sort	water-based copper-alumina hybrid nanofluid flows over a stretchin/shrinking sheet with dual solutions
granting_institution	Universiti Utara Malaysia
granting_department	Awang Had Salleh Graduate School of Arts & Sciences
publishDate	2024
url	https://etd.uum.edu.my/11185/1/depositpermission.pdf https://etd.uum.edu.my/11185/2/s904028_01.pdf https://etd.uum.edu.my/11185/3/s904028_02.pdf
_version_	1804888214038642688

Water-based copper-alumina hybrid nanofluid flows over a stretchin/shrinking sheet with dual solutions

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