Stagnation point flow over a stretching/shrinking sheet in a carbon nanotubes with slip effects

The consideration of the stagnation point flow over a stretching/shrinking sheet in carbon nanotubes (CNTs) is investigated. Mathematical models are derived for three boundary layer flow problems over a linearly, nonlinearly and exponentially stretching/shrinking sheet in CNTs with the presence of...

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Main Author:	Norzawary, Nur Hazirah Adilla
Format:	Thesis
Language:	English
Published:	2020
Subjects:	Stagnation point Carbon nanotubes
Online Access:	http://psasir.upm.edu.my/id/eprint/98858/1/IPM%202021%2013%20UPMIR.pdf
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id	my-upm-ir.98858
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spelling	my-upm-ir.988582022-10-17T00:53:53Z Stagnation point flow over a stretching/shrinking sheet in a carbon nanotubes with slip effects 2020-10 Norzawary, Nur Hazirah Adilla The consideration of the stagnation point flow over a stretching/shrinking sheet in carbon nanotubes (CNTs) is investigated. Mathematical models are derived for three boundary layer flow problems over a linearly, nonlinearly and exponentially stretching/shrinking sheet in CNTs with the presence of slip at the surface. Both single- and multi-wall CNTs are used along with two base fluids which are water and kerosene. Similarity transformation are used to transform the partial differential equations into a nonlinear ordinary differential equations. The stability analysis is derived for linear case by introducing the partial differential equations in unsteady case. These equations are then solved by using bvp4c solver in Matlab. Numerical results of skin friction coefficient and local Nusselt number are exhibited in forms of table and graph and also for profiles of velocity and temperature for a range of numerous parameters such as Prandtl number Pr, CNTs volume fraction φ, velocity slip parameter σ, thermal slip parameter σt, heat generation parameter Q, suction/injection parameter S, stretching/shrinking parameter ∈ and nonlinear parameter β. These parameters are observed to have a major influence on coefficient of skin friction and the local Nusselt number which illustrates the rate of heat transfer at the surface. The results show that solutions for shrinking sheet are dual solutions while unique solutions for stretching sheet. It is noticed that slip parameter, suction/injection parameter and nonlinear parameter widens the range in which the dual solutions exist. Furthermore, the first solution is found stable meanwhile the second solution is unstable and it is obtained by performing a stability analysis. Stagnation point Carbon nanotubes 2020-10 Thesis http://psasir.upm.edu.my/id/eprint/98858/ http://psasir.upm.edu.my/id/eprint/98858/1/IPM%202021%2013%20UPMIR.pdf text en public masters Universiti Putra Malaysia Stagnation point Carbon nanotubes Bachok, Norfifah
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English
advisor	Bachok, Norfifah
topic	Stagnation point Carbon nanotubes
spellingShingle	Stagnation point Carbon nanotubes Norzawary, Nur Hazirah Adilla Stagnation point flow over a stretching/shrinking sheet in a carbon nanotubes with slip effects
description	The consideration of the stagnation point flow over a stretching/shrinking sheet in carbon nanotubes (CNTs) is investigated. Mathematical models are derived for three boundary layer flow problems over a linearly, nonlinearly and exponentially stretching/shrinking sheet in CNTs with the presence of slip at the surface. Both single- and multi-wall CNTs are used along with two base fluids which are water and kerosene. Similarity transformation are used to transform the partial differential equations into a nonlinear ordinary differential equations. The stability analysis is derived for linear case by introducing the partial differential equations in unsteady case. These equations are then solved by using bvp4c solver in Matlab. Numerical results of skin friction coefficient and local Nusselt number are exhibited in forms of table and graph and also for profiles of velocity and temperature for a range of numerous parameters such as Prandtl number Pr, CNTs volume fraction φ, velocity slip parameter σ, thermal slip parameter σt, heat generation parameter Q, suction/injection parameter S, stretching/shrinking parameter ∈ and nonlinear parameter β. These parameters are observed to have a major influence on coefficient of skin friction and the local Nusselt number which illustrates the rate of heat transfer at the surface. The results show that solutions for shrinking sheet are dual solutions while unique solutions for stretching sheet. It is noticed that slip parameter, suction/injection parameter and nonlinear parameter widens the range in which the dual solutions exist. Furthermore, the first solution is found stable meanwhile the second solution is unstable and it is obtained by performing a stability analysis.
format	Thesis
qualification_level	Master's degree
author	Norzawary, Nur Hazirah Adilla
author_facet	Norzawary, Nur Hazirah Adilla
author_sort	Norzawary, Nur Hazirah Adilla
title	Stagnation point flow over a stretching/shrinking sheet in a carbon nanotubes with slip effects
title_short	Stagnation point flow over a stretching/shrinking sheet in a carbon nanotubes with slip effects
title_full	Stagnation point flow over a stretching/shrinking sheet in a carbon nanotubes with slip effects
title_fullStr	Stagnation point flow over a stretching/shrinking sheet in a carbon nanotubes with slip effects
title_full_unstemmed	Stagnation point flow over a stretching/shrinking sheet in a carbon nanotubes with slip effects
title_sort	stagnation point flow over a stretching/shrinking sheet in a carbon nanotubes with slip effects
granting_institution	Universiti Putra Malaysia
publishDate	2020
url	http://psasir.upm.edu.my/id/eprint/98858/1/IPM%202021%2013%20UPMIR.pdf
_version_	1747813901760724992

Stagnation point flow over a stretching/shrinking sheet in a carbon nanotubes with slip effects

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