Abstract
AbstractThe phenomenon of pressure drop and the heat transfer for single-phase microelectronic pin fin heat sinks has been analyzed numerically for many varying pin fin shapes. The present study is based on cooling the pin fins by forced air convection using ANSYS Fluent software. The primary intents of this study focus on maximum heat transfer and minimum flow resistance in pin fins. The aerodynamic efficiency of fins with varying shapes is analyzed to obtain the best-optimized shape for pin fins of heat sinks. The staggered rounded leading edges pin fin has a better quality factor (QF) with low pumping power and the pressure drop for the inlet flow velocities are higher than 4 m/s. Conic sections of pin fins with staggered configurations have been observed to provide better aerodynamic efficiency for Reynolds number ranging 450–900 whereas rounded leading edge of pin fin of heat sinks provides better aerodynamics efficiency for Reynolds numbers above 900.KeywordsHeat sinkPin finStaggered configurationsPressure dropPumping powerQuality factorHeat flux
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