Numerical Determination Of Cooling Performance On Heat Sink Using Impingement Jet

Authors : Altuğ KARABEY, Rami Abdulraheem Abdulrezzaq ALANI

Pages : 977-989

Doi:10.29130/dubited.1076314

View : 13 | Download : 10

Publication Date : 2023-04-30

Article Type : Research Paper

Abstract :The use of impingement jet technics drew significant attention of researchers in the recent period. In this method, significant heat transfer rates are achieved. The present study examined the cooling performance of the fin pairs, which are aligned in a consecutively enlarging-contracting pattern and have a rectangular geometry, on a heat sink. The target geometry was optimized in the previous study by using the Taguchi method. The analyses were performed using four different impingement jet velocities insert ignore into journalissuearticles values(10, 12, 14, and 16 m/sec.);, three different nozzle diameters insert ignore into journalissuearticles values(D=50, 63, and 75 mm);, three different heat flux values insert ignore into journalissuearticles values(q=2222, 3333, and 4444 W/m2);, and constant nozzle-to-target distance insert ignore into journalissuearticles values(h/d=1); were analyzed. These results were simulated numerically by using the ANSYS Fluent software. The k-ε realizable turbulence model was selected as the best model. The numerical results showed that the mean Nusselt number is directly proportional to the increase in the Reynolds number. The Nusselt number also increased with the increasing nozzle diameter value. The results are illustrated graphically insert ignore into journalissuearticles values(Nu-Re); in the present study. The peak value of the local Nusselt number was found to be at the stagnation point.
Keywords : Ansys Fluent, CFD, Isı alıcı, Isı transferinin iyileştirilmesi, Çarpan jet