Natural convection from H-shaped cross-section in square cavity: Effect of Rayleigh and Prandtl numbers

Abstract

The present work is a numerical simulation of free convection heat transfer from H-shaped cross-section placed in square container. The work is accomplished by using the commercial code ANSYS-CFX. The studied parameters were the Prandtl and Rayleigh number. The simulations were in steady and laminar regime. The ranges of the studied parameters were as: Ra = 103, 104 and 105; Pr = 0.61, 7.01, 50 and 100. The results showed the mean value of Nusselt number of H-shaped cross-section increases with increasing Rayleigh number. While it remains constant with increasing Prandtl number.