The main aim of this work is devoted to present a numerical analysis for studying the splitter’s effect on the hydro-thermal behavior of a Pin Fin Heat Sink (PFHS). The concept of application of pins in the heat sinks arises from increasing the heat transfer area to reach the maximum rate of heat losses in a limited space. On the other hand, flow separation behind the pin will enhance the pressure drop. To avoid or weaken the flow separation and reduce the pressure drop trough the heat sink, a thin plate is located on the back of the pin. Two common PFHSs with cylindrical and square pin shapes are compared together with and without splitters. Results showed that the splitter has improved the hydro-thermal performance of both cylindrical and square pins, so that the maximum improvement has occurred for the case of Q=10 W/m2 and V=4.5 m/s. Results for splitter heat sink with cylindrical pins represented 13.4% reduction in pressure drop, 36.8 % decline in thermal resistance and 20% growth in profit factor. Also for square pins the same results of 8.5% reduction for pressure drop, 23.8% reduction for thermal resistance and 14% increase in profit factor were observed.
کلید واژگان :Splitter, Pin fin, Heat sink, Profit factor
ارزش ریالی : 600000 ریال
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