Enhancement of Forced Convection Heat Transfer from Cylindrical Perforated Fins Heat Sink-CFD Study

In this paper, the three-dimensional, non-isothermal CFD model has been developed for the purpose of studying thermal performance of heat sink with perforated fins. Four samples of pin fins heat sinks with different geometrical patterns were proposed. The governing equations were discretized using a finite-volume method (FVM) and solved using multi-physics COMSOL package v. 5.3 and validated with available experimental results. CFD results were in accordance with the experimental results, showing a reliability related to CFD simulation model applied in this study. Results have shown that the perforated pin fins increase the heat dissipation rate and provide a sufficient and inexpensive improvement in the thermal transfer. The fins arrangement was also studied, and the results showed that the arrangement had a significant impact on improving heat transfer. the average heat transfer coefficients in terms of perforated fins were high compared to solid fins, and the heat dissipation of sample 3 was higher than for other samples.