REVIEW ON CIRCULAR PIN FINS IN FORCED CONVECTION

Mechanical Engineering

Heat transfer is a discipline of thermal engineering that concerns the generation, use, conversion, and exchange of thermal energy (heat) between physical systems. Heat transfer is classified into various mechanisms, such as thermal conduction, thermal convection, thermal radiation, transfer of energy by phase changes. Engineers also consider the transfer of mass of differing chemical species, either cold or hot, to achieve heat transfer. While these mechanisms have distinct characteristics, they often occur simultaneously in the same system. Pin fins are used to increase heat transfer from heated surfaces to air. Industrial experience has shown that for the same surface area, pin fins can transfer considerably more energy than straight fins. The analysis of a single pin fin is well known. However, when fins are placed in an array, the convective patterns become interrelated, and the resulting heat transfer coefficient has not been predicted. This investigation suggests that the most important geometric parameter influencing the heat transfer from pin fin arrays is the ratio of the fin diameter to the center-to-center spacing

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