The Effects of Hot Blocks Geometry and Particle Migration on Heat Transfer and Entropy Generation of a Novel I-Shaped Porous Enclosure

This paper studied the cooling performance of a hot electronic chip using nanofluids (NF) mixed convection, implementing Buongiorno’s model NF simulation. The were assumed water-Al2O3 nanoparticles (NP) in range 0 to 4% volume concentration. Six different problems combinations three internal blocks, including triangular, square, and circular geometries, two porous media, sand compact metallic powder, numerically solved. To discretize governing equations, finite control method was applied. As most proposed correlations for thermophysical properties inaccurate, especially thermal conductivity, new predictive correlation multi-variable regression with acceptable accuracy. It found that improved any increase NP loading. A higher nanoparticle concentration yielded better characteristics, which 11.93% volume. medium also much value normalized Nusselt number (Nu) compared other medium. entropy generation (EG) enhancement maximum triangular block cavity.