COMPARATIVE STUDY OF HEAT TRANSFER THROUGH PLATE FIN
The main purpose of extended surfaces called fins enhances the heat transfer rate. Fins offer an economical solution in several situations demanding natural convection heat transfer. The choice of a selected fin configuration in any heat transfer application depends on the, weight, space, manufacturing technique and cost concern additionally because the thermal characteristics it exhibits. In the present study, a detailed work has been done to develop a finite element methodology (FEM) to compare the effect of inlet velocity of air on Nusselt number, thermal resistance and pressure drop for plate fin heat sink (PFHS) and Different profiles like Plate Fin Heat Sink (PFHS), Elliptical plate Fin Heat Sink(EPFHS), Hexagonal Plate Fin Heat Sink (HPFHS) have been taken for simulation. The effect of changing shape of pin fin keeping same hydraulic diameter and Effect of inlet velocity on Thermal Resistance and Pressure Drop,Nusseltnumber has been studied elaborately.KEYWORDS :Heat Exchanger, CFD, Mass Flux, Heat Transfer, Turbulence Modeling etc.Also the effect of increasing number of pin fins on thermal resistance, pressure drop, Nusselt number has been observed. Finite element method (FEM) was used to compute Thermal resistance and Nusselt number. An extensive study was carried out using ANSYS WORKBENCH 14.5, a powerful platform for finite element analysis.Results obtained from a series of thermal resistance and pressure drop, Nusselt number variation curves for different profiles like Plate Fin Heat Sink (PFHS), Elliptical plate Fin Heat Sink (EPFHS), Hexagonal Plate Fin Heat Sink (HPFHS) . Hexagonal Plate Fin Heat Sink (HPFHS) for different no. of pin fin. It has been founded the Nusselt number is highest for Hexagonal Plate Fin Heat Sink (HPFHS) having 5 fins , thermal resistance is also minimum although pressure drop increases as we increases inlet velocity.
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