Analysis of Natural Convection in a Porous Cavity with Cylindrical Obstacles

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Author(s) Khudheyer S. Mushatet
Pages 562-568
Volume 3
Issue 5
Date May, 2013
Keywords free convection, cavities, porous media, obstacles.

Abstract

A numerical simulation is fulfilled to analyze the free convection heat transfer inside a cavity filled with porous media and containing two cylindrical obstacles. The Darcy model was used to convert the Navier Stockes equations to stream function. The effect of angle of inclination and the distance between the obstacles was studied for different values of Rayleigh numbers. A curvilinear coordinates system was used to deal with complexity of obstacled boundary conditions. The results show that the average Nusselt number is increased with increasing the distance between the obstacles and Rayleigh number. It was found that these parameters affected the size and location of the resulting vortices.

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