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

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 Author Mehdaoui, Razli ♦ Elmir, Mohamed ♦ Draoui, Belkacem ♦ Imine, Omar ♦ Mojtabi, Abdelkader Source Hyper Articles en Ligne (HAL) Content type Text Publisher Asian Network for Scientific Information File Format PDF Language English
 Subject Keyword Natural convection ♦ Porous ♦ Saturated ♦ Enclosure ♦ Fluid ♦ Darcy ♦ Brinkman ♦ Aspect ratio ♦ phys ♦ Physics [physics]/Mechanics [physics]/Mechanics of the fluids [physics.class-ph] 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 isotherms distribution, streams functions, the local and the average Nusselt numbers and the pressure. Correlations between these parameters and the aspect ratio are considered. ISSN 18125654 Educational Use Research Learning Resource Type Article Publisher Date 2006-01-01 e-ISSN 18125662 Journal Journal of Applied Sciences Volume Number 6 Issue Number 14 Page Count 9 Starting Page 2866 Ending Page 2874