Natural Convection Heat Transfer and Entropy Generation Analysis in Saltbox Roof under Summer Conditions

This study investigates numerically the 2D laminar natural convection in a Saltbox roof type geometry under summer climate conditions as obtained Africa, particularly Nigeria using ANSYS FLUENT to model boundary conditions. The effects of Rayleigh number (Ra) within range 103-107 and pitch angles (top base) on heat transfer, flow structure, temperature distribution entropy generation were analysed. Results show that is nearly symmetric at lower Ra, while for higher becomes asymmetric. Nusselt (Nu) has proportional relationship with top angle an inverse base when fixed. effect Ra Nu insignificant but noticeable Ra. total increases increase decrease angles, fixed numbers. physical implication that, geometry, best convective transfer process achieved by lowering increasing angle.