Akademik Veri Yönetim Sistemi
HEAT TRANSFER RESEARCH, sa.54, ss.37-51, 2023 (SCI-Expanded)
Thanks to the rapid advancement in technology, especially for the systems having high temperatures and high heat
fluxes, the interest in studies on impingement jets to improve the cooling efficiency increased in recent years. The
current study focuses on determining the optimization of the inclined multijet array to reduce the temperature of
electronic devices. In this study, the cooling was performed on the inclined surfaces by making use of impingement
multijets via heat sinks consisting of rectangular fins modeled in different geometries and optimum cooling conditions
were achieved. In achieving the optimum cooling conditions, the Taguchi method was used since it was thought to
offer a reduction in time and costs in industrial applications. In this study, 11 different parameters were examined at
three different levels in order to determine the optimum conditions for impingement multijet applications. The Nusselt
number was set as the performance characteristic and the L27(311) orthogonal sequence was used as the experiment plan
for 11 parameters that were determined. When calculating the Nusselt number by using nozzle diameter, the optimum
results were achieved using the following parameters: 40 mm of nozzle diameter, 9 m/s of air velocity, 20 mm of vertical
distance between slices, 4444 W/m2 of heat flux, 20 mm of vertical distance between fins, 15 mm of fin width, 30° of
fin angle, 15 mm of horizontal distance between slices, 10° of heat sink angle, 20 mm of horizontal distance between
fins, and 8 of nozzle diameter/heat sink dimensionless distance ratio. The flat plate and optimum heat sink established
using the data obtained were compared under the optimum conditions obtained from the analysis and to the optimum
conditions obtained using the finned optimum heat sink and it was determined that, under the optimum conditions, the
finned heat sink improved the heat transfer by 28.61% when compared to the flat plate.