CAJ | 학술논문

Micro-pin-fin cooler mounted on the power chip enables the heat removal to meet modern microsystem requirement.Carbon nanotubes (CNTs) have been proven as a potential material for micro-coolers due to the superior thermal conductivity,good mechanical property and so forth,and there appear various applications of CNTs in the micro-cooler technology.In thepresent paper,an analysis of the thermal and hydraulic characteristics of the micro-pin-fin heat sink was conducted,whereair was used as the cooling medium and an impinging jet was introduced to enhance the heat transfer. Three-dimension computational fluid dynamics (CFD) simulations were carried out for micro-pin-fin coolers with various parameters,including the pin-fin size and pattern as well as the jet velocity and nozzle diameter.The flow field and thermal properties of the micro-pin-fin heat sink were obtained,and the heat removal efficiency was evaluated.