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Title: Fully developed forced convection heat transfer in a porous channel with asymmetric heat flux boundary conditions
Authors: Çekmer, Özgür
Mobedi, Moghtada
Özerdem, Barış
Pop, Ioan
Keywords: Asymmetric boundary condition
Fully developed flow
Internal forced convection
Laminar flow
Porous media
Publisher: Springer Verlag
Source: Çekmer, Ö., Mobedi, M., Özerdem, B., and Pop, I. (2011). Fully developed forced convection heat transfer in a porous channel with asymmetric heat flux boundary conditions. Transport in Porous Media, 90(3), 791-806. doi:10.1007/s11242-011-9816-8
Abstract: An analytical study is performed on steady, laminar, and fully developed forced convection heat transfer in a parallel plate channel with asymmetric uniform heat flux boundary conditions. The channel is filled with a saturated porous medium, and the lower and upper walls are subjected to different uniform heat fluxes. The dimensionless form of the Darcy-Brinkman momentum equation is solved to determine the dimensionless velocity profile, while the dimensionless energy equation is solved to obtain temperature profile for a hydrodynamically and thermally fully developed flow in the channel. Nusselt numbers for the lower and upper walls and an overall Nusselt number are defined. Analytical expressions for determination of the Nusselt numbers and critical heat flux ratio, at which singularities are observed for individual Nusselt numbers, are obtained. Based on the values of critical heat flux ratio and Darcy number, a diagram is provided to determine the direction of heat transfer between the lower or upper walls while the fluid is flowing in the channel.
ISSN: 1573-1634
Appears in Collections:Mechanical Engineering / Makina Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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