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Influence of Aspect Ratio on Natural Convection in a Partially Porous Enclosure

Abstract : The objective of this research is the study the influence of aspect ratio A1 of fluid portion compared to the height of cavity, on the natural convection in a partially porous enclosure. A cylindrical heat source maintained at a uniform temperature is introduced into porous portion. The equations which describe the thermal transfer and the hydrodynamic flow are described by the Navier-Stokes equations modified by using the extension of Darcy-Brinkman and the energy equation. The results obtained are in the form of isotherm`s distribution, stream`s functions, the local and the average Nusselt numbers and the pressure. Correlations between these parameters and the aspect ratio are considered.
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Razli Mehdaoui, Mohamed Elmir, Belkacem Draoui, Omar Imine, Abdelkader Mojtabi. Influence of Aspect Ratio on Natural Convection in a Partially Porous Enclosure. Journal of Applied Sciences, Asian Network for Scientific Information, 2006, 6 (14), pp.2866-2874. ⟨10.3923/jas.2006.2866.2874⟩. ⟨hal-01946090⟩



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