Mixed convection flow at the lower stagnation point of a circular cylinder embedded in a porous medium filled by a nanofluid containing gyrotactic microorganisms

In this paper, the steady mixed convection boundary layer flow near the lower stagnation point of a horizontal circular cylinder with a constant surface temperature embedded in a porous medium saturated by a nanofluid containing gyrotactic microorganisms in a stream flowing vertically upwards for bo...

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Main Authors:	Leony Tham Yew Seng, Roslinda Nazar, Ioan Pop
Format:	Article
Published:	Penerbit Universiti Kebangsaan Malaysia 2012
Online Access:	http://journalarticle.ukm.my/5923/ http://journalarticle.ukm.my/5923/

id	ukm-5923
recordtype	eprints
spelling	ukm-59232013-01-30T13:44:21Z http://journalarticle.ukm.my/5923/ Mixed convection flow at the lower stagnation point of a circular cylinder embedded in a porous medium filled by a nanofluid containing gyrotactic microorganisms Leony Tham Yew Seng, Roslinda Nazar, Ioan Pop, In this paper, the steady mixed convection boundary layer flow near the lower stagnation point of a horizontal circular cylinder with a constant surface temperature embedded in a porous medium saturated by a nanofluid containing gyrotactic microorganisms in a stream flowing vertically upwards for both cases of a heated and cooled cylinder, is studied numerically. The resulting system of nonlinear ordinary differential equations is solved numerically using an implicit finite-difference scheme known as the Keller box method. By considering the governing parameters, namely the mixed convection parameter λ, the bioconvection Lewis number Lb, the traditional Lewis number Le, the bioconvection Péclet number Pb, the buoyancy ratio Nr, the bioconvection Rayleigh number Rb, the Brownian motion Nb and the thermophoresis Nt, the numerical results are obtained and discussed for the skin friction coefficient, the local Nusselt number, the local Sherwood number, the local density number of the motile microorganisms as well as the velocity, temperature, nanoparticles volume fraction and motile microorganisms density profiles. Penerbit Universiti Kebangsaan Malaysia 2012-12 Article PeerReviewed Leony Tham Yew Seng, and Roslinda Nazar, and Ioan Pop, (2012) Mixed convection flow at the lower stagnation point of a circular cylinder embedded in a porous medium filled by a nanofluid containing gyrotactic microorganisms. Journal of Quality Measurement and Analysis, 8 (2). pp. 45-63. ISSN 1823-5670 http://pkukmweb.ukm.my/ppsmfst/jqma/index2.html
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
description	In this paper, the steady mixed convection boundary layer flow near the lower stagnation point of a horizontal circular cylinder with a constant surface temperature embedded in a porous medium saturated by a nanofluid containing gyrotactic microorganisms in a stream flowing vertically upwards for both cases of a heated and cooled cylinder, is studied numerically. The resulting system of nonlinear ordinary differential equations is solved numerically using an implicit finite-difference scheme known as the Keller box method. By considering the governing parameters, namely the mixed convection parameter λ, the bioconvection Lewis number Lb, the traditional Lewis number Le, the bioconvection Péclet number Pb, the buoyancy ratio Nr, the bioconvection Rayleigh number Rb, the Brownian motion Nb and the thermophoresis Nt, the numerical results are obtained and discussed for the skin friction coefficient, the local Nusselt number, the local Sherwood number, the local density number of the motile microorganisms as well as the velocity, temperature, nanoparticles volume fraction and motile microorganisms density profiles.
format	Article
author	Leony Tham Yew Seng, Roslinda Nazar, Ioan Pop,
spellingShingle	Leony Tham Yew Seng, Roslinda Nazar, Ioan Pop, Mixed convection flow at the lower stagnation point of a circular cylinder embedded in a porous medium filled by a nanofluid containing gyrotactic microorganisms
author_facet	Leony Tham Yew Seng, Roslinda Nazar, Ioan Pop,
author_sort	Leony Tham Yew Seng,
title	Mixed convection flow at the lower stagnation point of a circular cylinder embedded in a porous medium filled by a nanofluid containing gyrotactic microorganisms
title_short	Mixed convection flow at the lower stagnation point of a circular cylinder embedded in a porous medium filled by a nanofluid containing gyrotactic microorganisms
title_full	Mixed convection flow at the lower stagnation point of a circular cylinder embedded in a porous medium filled by a nanofluid containing gyrotactic microorganisms
title_fullStr	Mixed convection flow at the lower stagnation point of a circular cylinder embedded in a porous medium filled by a nanofluid containing gyrotactic microorganisms
title_full_unstemmed	Mixed convection flow at the lower stagnation point of a circular cylinder embedded in a porous medium filled by a nanofluid containing gyrotactic microorganisms
title_sort	mixed convection flow at the lower stagnation point of a circular cylinder embedded in a porous medium filled by a nanofluid containing gyrotactic microorganisms
publisher	Penerbit Universiti Kebangsaan Malaysia
publishDate	2012
url	http://journalarticle.ukm.my/5923/ http://journalarticle.ukm.my/5923/
first_indexed	2023-09-18T19:45:31Z
last_indexed	2023-09-18T19:45:31Z
_version_	1777405873940856832

Mixed convection flow at the lower stagnation point of a circular cylinder embedded in a porous medium filled by a nanofluid containing gyrotactic microorganisms

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