Optimal Design and Analysis of Airfoil Radiator Fins Based on Weakly Compressible Turbulence

In order to further improve the heat dissipation performance of forced air-cooled radiator in the simplest and most efficient way, this paper firstly proposes an airfoil optimization of the radiator fin structure. Then, based on the weakly compressible turbulence theory, a multi-physics coupling finite element model (FEM) is constructed to restore actual phenomena with high accuracy. The temperature field, velocity field, and pressure field in the radiator are analyzed and verified qualitatively and quantitatively using this FEM. Finally, comprehensive comparative analysis of the cooling power, average pressure loss, and cooling power per unit volume of traditional radiators and airfoil radiators is carried out in terms of the number of fins and the airflow rate. The results show that the performance of the airfoil radiator is significantly better than that of the traditional radiator: the cooling power increases by 8.14% at least, the average pressure loss declines greatly, by 31.15% at least, and the cooling power per unit volume grows steadily by 15.92%. It can be seen that the optimized design can take into account both efficiency and practicality. The analysis methods and conclusions presented in the article have direct guiding significance for solving practical problems, as well as universal reference value for future research.