Effect of the fins configuration on natural convection heat transfer experimentally and numerically

The cooling of the electronic systems, electrical systems, and CPU of the computer is very important; therefore this study is prepared to improve this aims. In this study, natural convection heat transfer from rectangular fins with five different figures (continuous fins, 1-interrupted fins, 4-interrupted fins, inclined fins and V-fins) are investigated at different heat flux values. The mathematical model of the base plate and fins are solved numerically using COMSOL (5.0) after describing the mesh model using the COMSOL (5.0) and assuming the properties of air variation with film temperature. After finding the numerical result, the validation between experimental and numerical results has been verified. Good agreement has been found between the experimental and CFD results. Empirical correlations for the overall Nusselt number versus average Rayleigh number for these configurations are obtained and compared to other correlations sited in the literature. The range of Rayleigh number, Nusselt number and base plate temperature are, (1.7 *10^sup 7^-12.5*10^sup 7^), (37-83) and (25.6-81.34) respectively.