Analysis of Heat Sink with different Pin Configuration to Predict Thermal Effect

the model has been simulated using ANSYS software on fluent domain 15.0 workbench in order to observe various parameters affecting the thermal and hydraulic performance of heat sink channel. Four types of configurations of rounded pin fin heat sink have been used with different pin profile i.e. type-1 pin dia. 10 mm, type-2 pin dia. 12 mm, type-3 pin dia. 14 mm, type-4 pin dia. 15 mm. An optimized model of heat sink has been developed with pin of different round headed diameters. The simulations have been performed at a constant heat input 1481W/m2 that is the heat flux of fin base of heat sink with Reynolds number ranging between 3450 – 7970. The simulation of the optimized model gives higher value of pressure drop, less thermal resistance and increased Nusselt number. It has also been observed that profit factor was improved at moderate pumping power. The results are validated with previous research work. The configuration of type-4 i.e. 15mm round headed pin fin heat sink gives maximum convergence on all parameters amongst all the configurations used.