Numerical simulation for thin-film flow of newtonian and casson hybrid nanofluid with heat transfer

Nanofluid is one of the technologies used to improve heat transfer system. A class of nanofluid called hybrid nanofluid has been introduced recently. Hybrid nanofluid can upgrade thermal properties and consequently exhibit good heat transfer performance compared to nanofluid and conventional fluid....

Full description

Saved in:

Bibliographic Details
Main Author:	Kamis, Nur Ilyana
Format:	Thesis
Language:	English
Published:	2022
Subjects:	QA Mathematics
Online Access:	http://eprints.utm.my/102572/1/NurIlyanaKamisMFS2022.pdf.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-utm-ep.102572
record_format	uketd_dc
spelling	my-utm-ep.1025722023-09-09T01:32:16Z Numerical simulation for thin-film flow of newtonian and casson hybrid nanofluid with heat transfer 2022 Kamis, Nur Ilyana QA Mathematics Nanofluid is one of the technologies used to improve heat transfer system. A class of nanofluid called hybrid nanofluid has been introduced recently. Hybrid nanofluid can upgrade thermal properties and consequently exhibit good heat transfer performance compared to nanofluid and conventional fluid. Besides that, the hybrid nanofluid has also manifested exquisite properties such as better chemical and mechanical inertness, greater thermal and electrical conductivity, and lower cost. In view of this, the problem of boundary layer flow of hybrid nanofluid embedded by the thin-film for viscous and Casson fluid past an unsteady porous stretching sheet is investigated in this thesis. Thin-film flow on a stretching sheet has a significant effect on heat transfer analysis. Such applications are used in many industrial operations including wire and fiber coating, metal and polymer extrusion, transpiration cooling, and optical industry such as production of smart contact lenses. This study begins with the derivation of the governing equation for the thin-film fluid flows and heat transfer based on the conservation law of mass, momentum, and energy. The modified Tiwari and Das model is applied to describe the properties of the hybrid nanofluid. Then, the developed nonlinear governing partial differential equations that are subjected to the appropriate boundary conditions are transformed into the nonlinear ordinary differential equations (ODEs) using the similarity transformation technique. The resulting nonlinear systems of the ODEs are then solved using the Keller box method. The unknown constant, thin-film thickness is obtained by the homotopy analysis method. The numerical results of surface shear stress and heat transfer coefficient as well as the velocity and temperature distributions for the pertinent parameters which are unsteadiness, nanoparticles volume fraction, Casson parameter, and intensity of suction and injection parameters are displayed graphically and in tabular forms. For both fluids, it is found that the thickness of thin-film is reduced due to increasing values of unsteadiness, nanoparticles volume fraction, Casson parameter, and intensity of injection. Numerical results depict that the presence of hybrid nanoparticles in both fluids not only enhanced the temperature distribution but it also reduced the velocity distribution, shear stress, and heat transfer coefficient. A similar pattern is revealed at the increment of Casson parameter. The unsteadiness parameter tends to upgrade the velocity and temperature distributions as well as the local skin friction. Incrementation of the velocity, temperature and shear stress in all fluids have been noticed along with the enhancement of injection parameter. Interestingly, suction fluid has changed the thickness of the thin-film that tends to be dense and helps to escalate heat transfer performance of the hybrid nanofluid. 2022 Thesis http://eprints.utm.my/102572/ http://eprints.utm.my/102572/1/NurIlyanaKamisMFS2022.pdf.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:148948 masters Universiti Teknologi Malaysia Faculty of Science
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	QA Mathematics
spellingShingle	QA Mathematics Kamis, Nur Ilyana Numerical simulation for thin-film flow of newtonian and casson hybrid nanofluid with heat transfer
description	Nanofluid is one of the technologies used to improve heat transfer system. A class of nanofluid called hybrid nanofluid has been introduced recently. Hybrid nanofluid can upgrade thermal properties and consequently exhibit good heat transfer performance compared to nanofluid and conventional fluid. Besides that, the hybrid nanofluid has also manifested exquisite properties such as better chemical and mechanical inertness, greater thermal and electrical conductivity, and lower cost. In view of this, the problem of boundary layer flow of hybrid nanofluid embedded by the thin-film for viscous and Casson fluid past an unsteady porous stretching sheet is investigated in this thesis. Thin-film flow on a stretching sheet has a significant effect on heat transfer analysis. Such applications are used in many industrial operations including wire and fiber coating, metal and polymer extrusion, transpiration cooling, and optical industry such as production of smart contact lenses. This study begins with the derivation of the governing equation for the thin-film fluid flows and heat transfer based on the conservation law of mass, momentum, and energy. The modified Tiwari and Das model is applied to describe the properties of the hybrid nanofluid. Then, the developed nonlinear governing partial differential equations that are subjected to the appropriate boundary conditions are transformed into the nonlinear ordinary differential equations (ODEs) using the similarity transformation technique. The resulting nonlinear systems of the ODEs are then solved using the Keller box method. The unknown constant, thin-film thickness is obtained by the homotopy analysis method. The numerical results of surface shear stress and heat transfer coefficient as well as the velocity and temperature distributions for the pertinent parameters which are unsteadiness, nanoparticles volume fraction, Casson parameter, and intensity of suction and injection parameters are displayed graphically and in tabular forms. For both fluids, it is found that the thickness of thin-film is reduced due to increasing values of unsteadiness, nanoparticles volume fraction, Casson parameter, and intensity of injection. Numerical results depict that the presence of hybrid nanoparticles in both fluids not only enhanced the temperature distribution but it also reduced the velocity distribution, shear stress, and heat transfer coefficient. A similar pattern is revealed at the increment of Casson parameter. The unsteadiness parameter tends to upgrade the velocity and temperature distributions as well as the local skin friction. Incrementation of the velocity, temperature and shear stress in all fluids have been noticed along with the enhancement of injection parameter. Interestingly, suction fluid has changed the thickness of the thin-film that tends to be dense and helps to escalate heat transfer performance of the hybrid nanofluid.
format	Thesis
qualification_level	Master's degree
author	Kamis, Nur Ilyana
author_facet	Kamis, Nur Ilyana
author_sort	Kamis, Nur Ilyana
title	Numerical simulation for thin-film flow of newtonian and casson hybrid nanofluid with heat transfer
title_short	Numerical simulation for thin-film flow of newtonian and casson hybrid nanofluid with heat transfer
title_full	Numerical simulation for thin-film flow of newtonian and casson hybrid nanofluid with heat transfer
title_fullStr	Numerical simulation for thin-film flow of newtonian and casson hybrid nanofluid with heat transfer
title_full_unstemmed	Numerical simulation for thin-film flow of newtonian and casson hybrid nanofluid with heat transfer
title_sort	numerical simulation for thin-film flow of newtonian and casson hybrid nanofluid with heat transfer
granting_institution	Universiti Teknologi Malaysia
granting_department	Faculty of Science
publishDate	2022
url	http://eprints.utm.my/102572/1/NurIlyanaKamisMFS2022.pdf.pdf
_version_	1783729183644450816

Numerical simulation for thin-film flow of newtonian and casson hybrid nanofluid with heat transfer

Similar Items