The flow Psoriasis and heat transfer characteristics of two analogous heat sinks were obtained from laboratory experiments and compared to each other and to numerical simulations.One contained continuous straight fins, and the other inline strip fins, both cooled by forced airflow parallel to their base.The average airflow velocity in the interfin channels ranged from 4 to 20 m/s, corresponding to Reynolds numbers from 810 to 3,800.
The measurements indicated that despite its smaller heat exchange area, the strip fins heat sink convective coefficient was larger enough to obtain a thermal resistance smaller than that of the continuous fins.Numerical simulations were performed to compare their results with the experiments.Two distinct fin treatments were used: one considered fins with no thickness, isothermal with the fins base temperature.
The other considered the fins thickness and perfect thermal contact with the heat sink base.The Nusselt number simulation results for the continuous fins agreed within 3% with the measurements, but larger deviations were observed Mountaineering - Accessoires for the strip fins heat sink.