This study numerically investigates a micro-pin-fin heat sink (MPFHS) to improve cooling capability and productivity of MPFHS. It was assumed that the flow is turbulent, steady, and incompressible. Turbulence was modeled using the $k-\epsilon$ turbulence model. For this purpose, the effects of different pin-fin configurations, including RS, ET, and ES, height, fluid velocity, in terms of heat transfer, pressure drop, as well as temperature variation between the inlet and outlet were studied in detail. Moreover, a comparison investigation with experimental results was carried out. Finally, it is found that the RS configuration possessed maximum heat transfer while yielding the maximum pressure drop. Smaller distances between the pins improved heat transfer but enhanced the convective heat transfer coefficient and increased pressure drop. Contrarily, an increased pin length and diameter enhanced pressure drop and heat transfer for all the configurations. This was more obvious in the RS configuration.

本研究对微型针翅式散热器 (MPFHS) 进行数值研究，以提高 MPFHS 的冷却能力和生产率。假设流动是湍流、稳定和不可压缩的。湍流是用$克-\epsilon$湍流模型。为此，详细研究了不同的针翅配置，包括 RS、ET 和 ES、高度、流体速度，在传热、压降以及入口和出口之间的温度变化方面的影响。此外，还进行了与实验结果的对比研究。最后，发现 RS 配置拥有最大的热传递，同时产生最大的压降。销之间更小的距离改善了传热，但增强了对流传热系数并增加了压降。相反，增加的销长度和直径增强了所有配置的压降和热传递。这在 RS 配置中更为明显。