Effects of Rib Clearances on Heat Transfer Enhancement in Mini-Cooling Channel by Pulsating Flow

Abstract

This study aims to develop a novel water-cooled device that increases heat transfer performance while inhibiting the increase of pumping power for next-generation electronic equipment. Our previous reports have reported that the combination of the pulsating flow, which is the unsteady flow that the supply flow rate is periodically changed likes a blood in the body of human beings, and the rib has higher cooling efficiency. In this study, a relationship between heat transfer performance of pulsating flow and a rib pitch was evaluated to verify an optimal rib clearance for improving heat transfer by pulsating flow through 3D-CFD analysis. It is found that the level of the heat transfer enhancement was dependent on the rib clearances.