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https://hdl.handle.net/11147/4901
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. | URI: | http://doi.org/10.1007/s11242-011-9816-8 http://hdl.handle.net/11147/4901 |
ISSN: | 1573-1634 0169-3913 |
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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