HEAT SINK PERFORMANCE AND THERMAL ANALYSIS USING CFD WITH VARIOUS FIN CONFIGURATIONS
The optimum Heat Sink for effective cooling of electrical gadgets is what this paper aim to demonstrate. As heat sinks are frequently utilized in electronic components to enhance heat transfer, this work compares a heat sink with fins of various profiles, including square, circular, triangular, and hexagonal fins. This study proposes a novel approach for cooling electronic components through the use of heat sinks composed of aluminum alloy. Several geometric factors need to be taken into account, such as the length and thickness of fins, the quantity of fins, the thickness of the base plate, the spacing between fins, the shape or profile of the fins, and the material used, among others, the selection of the optimal heat sink is influenced by multiple geometric factors. Therefore, to address this, initial investigations have been performed using computational fluid dynamics (CFD) simulations to analyze the fluid flow and heat transfer traits of different conventional steady heat sink designs. In order to determine how different fin arrays' geometrical fin characteristics, affect natural convection heat transfer, CFD analysis is used. Ansys Workbench 19.0, which was used in our investigation, was used to build Computational Fluid Dynamics. A finite-volume control volume-based approach used to solve governing equations. Utilizing computational fluid dynamics, the momentum equations' velocity and pressure components are interdependent and cannot be analyzed independently of each other. Heat transfer using aluminum 6061 as a pin fin material and ambient air. For the purpose of analyzing the thermal efficiency of various pin fins, measuring their thermal resistance, pressure drop, heat transfer coefficients, as well as predicting the smallest temperature variation across the fins for the various fin profiles' heat sinks at Diverse velocities and a constant heat supply of 15W, the inlet air temperature of 295 K is used. This study's objective is to investigate the impact of various pin-fin arrangements. The results demonstrate that the Elliptical fin of hydraulic diameter 4.51 mm diameter with 3.38 mm fin spacing and heat sink demonstrates improved performance at a velocity of 12 m/s because the minimum thermal resistance and maximum heat transfer coefficient. In comparison to other scenarios and fin heat sink types, the thermal resistance of this particular configuration measures 2.977K, while the heat transfer coefficient is 335 W/m2K. Moreover, the pressure drop is 61 Pa lower than the other cases.
Heat Sink, Computational Fluid Dynamics, Natural convection, Surface Nusselt number, Pressure drop, Thermal resistance, Heat transfer coefficient