Transpiration effect on unsteady natural convection boundary layer flow around a vertical slender body

In this paper, the transpiration effect on unsteady natural convection boundary layer flow around a vertical slender body has been studied numerically. Applying the similarity transformation together with Boussinesq's approximation, the governing PDEs have been modified into ODEs. These equatio...

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Autores principales:	Md Hasanuzzaman, Md Ahasan Kabir, Md Tanvir Ahmed
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Transpiration Natural convection Slender body Boussinesq approximation Technology T
Acceso en línea:	https://doaj.org/article/5c7bdc209e4a4cbbbf6e19eb6de6e5ff
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spelling	oai:doaj.org-article:5c7bdc209e4a4cbbbf6e19eb6de6e5ff2021-11-04T04:39:10ZTranspiration effect on unsteady natural convection boundary layer flow around a vertical slender body2590-123010.1016/j.rineng.2021.100293https://doaj.org/article/5c7bdc209e4a4cbbbf6e19eb6de6e5ff2021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2590123021000943https://doaj.org/toc/2590-1230In this paper, the transpiration effect on unsteady natural convection boundary layer flow around a vertical slender body has been studied numerically. Applying the similarity transformation together with Boussinesq's approximation, the governing PDEs have been modified into ODEs. These equations have been solved by applying the shooting technique with the help of “ODE45 MATLAB” software. The influences of the pertinent parameters/numbers namely transpiration parameter (FW), the radius of slender body (R0), Prandtl number (Pr) and the driving parameter (β) on the velocity and temperature of the fluid within the boundary layer has been analyzed. The velocity and temperature decrease with increasing the values of the suction parameter but a reverse trend is found for increasing values of blowing parameter from the wall to the free stream. Rising values of the suction parameter (0.5–1.0) increase the local skin friction and the heat transfer rate by approximately about 35% and 31%. The velocity of the fluid decreases for uplifting values of the kinematic viscosity. When the thermal conductivity decreases then the temperature of the fluid decreases. Rising values of the body radius parameter the skin-friction and the rate of heat transfer increase.Md HasanuzzamanMd Ahasan KabirMd Tanvir AhmedElsevierarticleTranspirationNatural convectionSlender bodyBoussinesq approximationTechnologyTENResults in Engineering, Vol 12, Iss , Pp 100293- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Transpiration Natural convection Slender body Boussinesq approximation Technology T
spellingShingle	Transpiration Natural convection Slender body Boussinesq approximation Technology T Md Hasanuzzaman Md Ahasan Kabir Md Tanvir Ahmed Transpiration effect on unsteady natural convection boundary layer flow around a vertical slender body
description	In this paper, the transpiration effect on unsteady natural convection boundary layer flow around a vertical slender body has been studied numerically. Applying the similarity transformation together with Boussinesq's approximation, the governing PDEs have been modified into ODEs. These equations have been solved by applying the shooting technique with the help of “ODE45 MATLAB” software. The influences of the pertinent parameters/numbers namely transpiration parameter (FW), the radius of slender body (R0), Prandtl number (Pr) and the driving parameter (β) on the velocity and temperature of the fluid within the boundary layer has been analyzed. The velocity and temperature decrease with increasing the values of the suction parameter but a reverse trend is found for increasing values of blowing parameter from the wall to the free stream. Rising values of the suction parameter (0.5–1.0) increase the local skin friction and the heat transfer rate by approximately about 35% and 31%. The velocity of the fluid decreases for uplifting values of the kinematic viscosity. When the thermal conductivity decreases then the temperature of the fluid decreases. Rising values of the body radius parameter the skin-friction and the rate of heat transfer increase.
format	article
author	Md Hasanuzzaman Md Ahasan Kabir Md Tanvir Ahmed
author_facet	Md Hasanuzzaman Md Ahasan Kabir Md Tanvir Ahmed
author_sort	Md Hasanuzzaman
title	Transpiration effect on unsteady natural convection boundary layer flow around a vertical slender body
title_short	Transpiration effect on unsteady natural convection boundary layer flow around a vertical slender body
title_full	Transpiration effect on unsteady natural convection boundary layer flow around a vertical slender body
title_fullStr	Transpiration effect on unsteady natural convection boundary layer flow around a vertical slender body
title_full_unstemmed	Transpiration effect on unsteady natural convection boundary layer flow around a vertical slender body
title_sort	transpiration effect on unsteady natural convection boundary layer flow around a vertical slender body
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/5c7bdc209e4a4cbbbf6e19eb6de6e5ff
work_keys_str_mv	AT mdhasanuzzaman transpirationeffectonunsteadynaturalconvectionboundarylayerflowaroundaverticalslenderbody AT mdahasankabir transpirationeffectonunsteadynaturalconvectionboundarylayerflowaroundaverticalslenderbody AT mdtanvirahmed transpirationeffectonunsteadynaturalconvectionboundarylayerflowaroundaverticalslenderbody
_version_	1718445212999614464

Transpiration effect on unsteady natural convection boundary layer flow around a vertical slender body

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