INVESTIGATIONAL AND CFD ANALYSIS OF HEAT TRANSFER RATE IN MULTI AIR JET IMPINGEMENT OVER A FLAT PLATE AND RECTANGULAR-FIN HEAT SINK

Abstract

In this paper reports the results of analysis of heat transfer performance of in compression air jet impinging of heated surface over a flat plate & Rectangular-fin heat sink. To impersonate the computer processor of flat plate and Rectangular-fin dimensions are 40mm*40mm*10mm and pin height is 6cm and fin thickness is 2mm and L/t ratios are 5,10, 15respectively.By using this simulation in Ansys  fluent software to perform the turbulent jet impingement on a surface. The bottom surface of the plate is providing constant heat flux and top surface of the plate is cooled by an impingement jet of air. It has two equations are used k-w model and shear stress transport to handle the turbulent jet. The result of flat plate heat sink is compare the Experimental and simulation is higher at 0.89% of investigational to contrast numerical and Nusselt is higher at 3.36% of numerical to evaluate the investigational and heat transfer coefficient is higher at 4.58% of numerical to compare the tentative and result of pin fin heat sink is compare the investigational and numerical is higher at 0.24% of trial to judge against the numerical and Nusselt number is higher at0.72% of numerical to evaluate the tentative and heat transfer coefficient is higher at 0.89% of numerical to compare the trial. The effect of L/t ratios of jet impingement over a flat plate and rectangular fin heat sink on the heat transfer performance of the heated surface of investigate.