Free convection in a vertical cylindrical enclosure |
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| Affiliation: | 1. Turbulence and Energy Laboratory, University of Windsor, Ontario, Canada;2. Essex Energy, Oldcastle, Ontario, Canada;1. Mechanical Engineering Department, Babol Noshirvani University of Technology, Babol, Iran;2. Department of Mechanical Engineering, Amirkabir University of Technology (Tehran Polytechnic), 424 Hafez Avenue, P.O. Box 15875-4413, Tehran, Iran;1. Department of Theoretical Mechanics, Faculty of Mechanics and Mathematics, Tomsk State University, 634050 Tomsk, Russia;2. Institute of Power Engineering, Tomsk Polytechnic University, 634050 Tomsk, Russia;3. Department of Applied Mathematics, Babeş-Bolyai University, 400084 Cluj-Napoca, Romania;4. S.A.I.C.O., 1111 Arlington Blvd, Arlington, VA 22209, USA |
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| Abstract: | The problem of transient natural convection which occurs in a vertical cylinder opened at both ends, filled with a fluid saturated porous medium and heated with a periodical lateral heat flux density is outlined. The present study is carried out by the use of the Darcy flow model, and it assumes local thermal equilibrium between the solid and fluid phases. The wall heat conduction is taken into account. Numerical simulations provide us with the evolution of flow and temperature fields within the cylinder. The analysis of flow and thermal field response to any changes in the period of heat pulsation values, the ratio of the wall thermal diffusivity to the porous medium thermal diffusivity and the thickness of the wall are reported in the course of this study. |
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