1) The document presents a CFD analysis comparing the heat transfer performance of rectangular fins versus louvered fins in an aluminum radiator.
2) The results show that the louvered fin design achieved a 49% higher heat transfer rate and significantly higher fluid velocities compared to the rectangular fin design.
3) Key factors in the improved performance of the louvered fins are the fin geometry and increased turbulence that enhances heat transfer between the coolant and fins.