CFD Analysis of Cylindrical Pin with Trapezoidal Fin Heat Sink using ANSYS Fluent 14.0

In our analysis, Computational Fluid Dynamics was developed on Ansys 14.0. The governing equations are solved by adopting a control volume-based finite-Volume method with a power-law scheme on an orthogonal non- uniform staggered grid. The coupling of the velocity and the pressure terms of momentum equations are solved by the Computational Fluid Dynamics. The Cylindrical Pin with Trapezoidal Fin Heat Sink is composed of a plate fin heat sink and some Cylindrical pins between plate fins. Heat transfer taken in air and aluminum as a pin fin material. To Study of thermal Performance of circular pin fin. and get the value of heat transfer coefficient, surface Nusselt number, thermal resistance and pressure drop for the heat sink of the different circular pin with trapezoidal fin profile at different velocity and constant heat input 10w and predict temperature distribution along the cylindrical pin with Trapezoidal fin. The purpose of this study is to examine the effects of the configurations of the pin-fins design .Thermal resistance , Pressure drop, and Nusselt number is compared with experimental results and simulation results(4)and design of circular pin of various diameter 4.0mm,3.75mm,3.50mm with trapezoidal fin of various thickness 1.0mm, 0.9mm, 0.8mm various wind velocity of 6.5 m/s,9.5m/s,12.5m/s of 30 cases. The results show that the Circular Pin of 3.75 mm diameter with trapezoidal Fin of 0.8 mm tip thickness heat Sink at 12.5m/s wind velocity has better unnaturally performance pressure because of max Nusselt number 1066.93 and heat transfer coefficient 51.60 W/M2K and thermal resistance 0.47 than the plate fin heat sink and other cases.

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