Unsteady magnetohydrodynamic flow and heat transfer of nanofluid and hybrid nanofluids over a vertical cone embedded in a porous medium

Nanotechnology has played a significant role in multi-fields of heat transfer processes and has made impressive advances in energy applications. This technology has significantly developed the science of thermal energy by improving various properties of energy transmitting fluids. This includes the...

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Main Author:	Hanifa, Hanifa
Format:	Thesis
Language:	English
Published:	2021
Subjects:	QA Mathematics
Online Access:	http://eprints.utm.my/id/eprint/102367/1/HanifaPFS2021.pdf
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spelling	my-utm-ep.1023672023-08-28T06:14:18Z Unsteady magnetohydrodynamic flow and heat transfer of nanofluid and hybrid nanofluids over a vertical cone embedded in a porous medium 2021 Hanifa, Hanifa QA Mathematics Nanotechnology has played a significant role in multi-fields of heat transfer processes and has made impressive advances in energy applications. This technology has significantly developed the science of thermal energy by improving various properties of energy transmitting fluids. This includes the development of nanofluid that can provide high heat transfer rates in a thermal energy system. Anewclass of nanofluid is known as hybrid nanofluid. Hybrid nanofluid has better chemical and mechanical strength, excellent thermal and electrical conductivity, lower cost, high heat transfer rates, and reliable physio-chemical properties. Bearing in mind such interesting features of nanofluid, the predominant idea of this thesis is to investigate heat transfer in the boundary layer flow of unsteady viscous nanofluids and hybrid nanofluid. Specifically, the water based nanofluids and hybrid nanofluid flow along a vertical cone enclosed in a porous medium is considered. The effects of external magnetic field and thermal radiation are additional features to the innovation of the constructed mathematical model. The system of nonlinear coupled equation supported by related initial and boundary conditions are solved numerically by using finite difference method. In the analysis, the impact of various physical parameters are scrutinized and the results are exhibited graphically. The physical quantities of wall shear stress and heat transfer coefficient versus governing constraints are evaluated and their results are summarized in the form of tables. The heat transfer performance of hybrid nanofluid is compared with the performance of nanofluid. The results show that the thermal performance of the system increases in the presence of magnetic field and thermal radiation. In addition, high heat transfer rates are observed when the flow is induced by varied heat flux as compared to varied wall temperature. Moreover, the viscosity is also responsible to enhance the heat transfer rates of the fluids. This research contributes to a better understanding on the effects of magnetohydrodynamic in mixed convection for radiative hybrid nanofluid flow. 2021 Thesis http://eprints.utm.my/id/eprint/102367/ http://eprints.utm.my/id/eprint/102367/1/HanifaPFS2021.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:146118 phd doctoral Universiti Teknologi Malaysia, Faculty of Science Faculty of Science
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	QA Mathematics
spellingShingle	QA Mathematics Hanifa, Hanifa Unsteady magnetohydrodynamic flow and heat transfer of nanofluid and hybrid nanofluids over a vertical cone embedded in a porous medium
description	Nanotechnology has played a significant role in multi-fields of heat transfer processes and has made impressive advances in energy applications. This technology has significantly developed the science of thermal energy by improving various properties of energy transmitting fluids. This includes the development of nanofluid that can provide high heat transfer rates in a thermal energy system. Anewclass of nanofluid is known as hybrid nanofluid. Hybrid nanofluid has better chemical and mechanical strength, excellent thermal and electrical conductivity, lower cost, high heat transfer rates, and reliable physio-chemical properties. Bearing in mind such interesting features of nanofluid, the predominant idea of this thesis is to investigate heat transfer in the boundary layer flow of unsteady viscous nanofluids and hybrid nanofluid. Specifically, the water based nanofluids and hybrid nanofluid flow along a vertical cone enclosed in a porous medium is considered. The effects of external magnetic field and thermal radiation are additional features to the innovation of the constructed mathematical model. The system of nonlinear coupled equation supported by related initial and boundary conditions are solved numerically by using finite difference method. In the analysis, the impact of various physical parameters are scrutinized and the results are exhibited graphically. The physical quantities of wall shear stress and heat transfer coefficient versus governing constraints are evaluated and their results are summarized in the form of tables. The heat transfer performance of hybrid nanofluid is compared with the performance of nanofluid. The results show that the thermal performance of the system increases in the presence of magnetic field and thermal radiation. In addition, high heat transfer rates are observed when the flow is induced by varied heat flux as compared to varied wall temperature. Moreover, the viscosity is also responsible to enhance the heat transfer rates of the fluids. This research contributes to a better understanding on the effects of magnetohydrodynamic in mixed convection for radiative hybrid nanofluid flow.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Hanifa, Hanifa
author_facet	Hanifa, Hanifa
author_sort	Hanifa, Hanifa
title	Unsteady magnetohydrodynamic flow and heat transfer of nanofluid and hybrid nanofluids over a vertical cone embedded in a porous medium
title_short	Unsteady magnetohydrodynamic flow and heat transfer of nanofluid and hybrid nanofluids over a vertical cone embedded in a porous medium
title_full	Unsteady magnetohydrodynamic flow and heat transfer of nanofluid and hybrid nanofluids over a vertical cone embedded in a porous medium
title_fullStr	Unsteady magnetohydrodynamic flow and heat transfer of nanofluid and hybrid nanofluids over a vertical cone embedded in a porous medium
title_full_unstemmed	Unsteady magnetohydrodynamic flow and heat transfer of nanofluid and hybrid nanofluids over a vertical cone embedded in a porous medium
title_sort	unsteady magnetohydrodynamic flow and heat transfer of nanofluid and hybrid nanofluids over a vertical cone embedded in a porous medium
granting_institution	Universiti Teknologi Malaysia, Faculty of Science
granting_department	Faculty of Science
publishDate	2021
url	http://eprints.utm.my/id/eprint/102367/1/HanifaPFS2021.pdf
_version_	1776100906536796160

Unsteady magnetohydrodynamic flow and heat transfer of nanofluid and hybrid nanofluids over a vertical cone embedded in a porous medium

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