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Effect of variable thermal conductivity and viscosity on Casson nanofluid flow with convective heating and velocity slip

This work investigates the effects of combined variable viscosity and thermal conductivity, nonlinear radiation and non-Darcian porous medium on a boundary layer MHD Casson nanofluid flow over a vertical flat plate with convective heating and velocity slip boundary conditions. The governing transpor...

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Detalles Bibliográficos
Autores principales: Gbadeyan, J.A., Titiloye, E.O., Adeosun, A.T.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6940677/
https://www.ncbi.nlm.nih.gov/pubmed/31909255
http://dx.doi.org/10.1016/j.heliyon.2019.e03076
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author Gbadeyan, J.A.
Titiloye, E.O.
Adeosun, A.T.
author_facet Gbadeyan, J.A.
Titiloye, E.O.
Adeosun, A.T.
author_sort Gbadeyan, J.A.
collection PubMed
description This work investigates the effects of combined variable viscosity and thermal conductivity, nonlinear radiation and non-Darcian porous medium on a boundary layer MHD Casson nanofluid flow over a vertical flat plate with convective heating and velocity slip boundary conditions. The governing transport nonlinear partial differential equations and the boundary conditions are non-dimensionalized. The resulting system of coupled partial differential equations is then reduced to a set of coupled nonlinear ordinary differential equations using similarity transformation. Galerkin weighted residual method (GWRM) is then employed to solve the resulting set of equations. Numerical results are obtained for dimensionless velocity, temperature and nanoparticle volume fraction (nanoparticle concentration). It is found that the velocity increases, while both temperature and nanoparticle volume fraction decrease with increased values of variable thermal conductivity and viscosity. Comparisons are carried out with published data in the literature thereby validating the numerical results. An excellent agreement is observed. Furthermore, this present study can find applications in the process involving nanofluid operations.
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spelling pubmed-69406772020-01-06 Effect of variable thermal conductivity and viscosity on Casson nanofluid flow with convective heating and velocity slip Gbadeyan, J.A. Titiloye, E.O. Adeosun, A.T. Heliyon Article This work investigates the effects of combined variable viscosity and thermal conductivity, nonlinear radiation and non-Darcian porous medium on a boundary layer MHD Casson nanofluid flow over a vertical flat plate with convective heating and velocity slip boundary conditions. The governing transport nonlinear partial differential equations and the boundary conditions are non-dimensionalized. The resulting system of coupled partial differential equations is then reduced to a set of coupled nonlinear ordinary differential equations using similarity transformation. Galerkin weighted residual method (GWRM) is then employed to solve the resulting set of equations. Numerical results are obtained for dimensionless velocity, temperature and nanoparticle volume fraction (nanoparticle concentration). It is found that the velocity increases, while both temperature and nanoparticle volume fraction decrease with increased values of variable thermal conductivity and viscosity. Comparisons are carried out with published data in the literature thereby validating the numerical results. An excellent agreement is observed. Furthermore, this present study can find applications in the process involving nanofluid operations. Elsevier 2019-12-30 /pmc/articles/PMC6940677/ /pubmed/31909255 http://dx.doi.org/10.1016/j.heliyon.2019.e03076 Text en © 2019 Published by Elsevier Ltd. http://creativecommons.org/licenses/by-nc-nd/4.0/ This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Article
Gbadeyan, J.A.
Titiloye, E.O.
Adeosun, A.T.
Effect of variable thermal conductivity and viscosity on Casson nanofluid flow with convective heating and velocity slip
title Effect of variable thermal conductivity and viscosity on Casson nanofluid flow with convective heating and velocity slip
title_full Effect of variable thermal conductivity and viscosity on Casson nanofluid flow with convective heating and velocity slip
title_fullStr Effect of variable thermal conductivity and viscosity on Casson nanofluid flow with convective heating and velocity slip
title_full_unstemmed Effect of variable thermal conductivity and viscosity on Casson nanofluid flow with convective heating and velocity slip
title_short Effect of variable thermal conductivity and viscosity on Casson nanofluid flow with convective heating and velocity slip
title_sort effect of variable thermal conductivity and viscosity on casson nanofluid flow with convective heating and velocity slip
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6940677/
https://www.ncbi.nlm.nih.gov/pubmed/31909255
http://dx.doi.org/10.1016/j.heliyon.2019.e03076
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