Effect of Rib Height and Reynolds Number Regarding Heat Transfer Enhancement in Water-Cooling Channel Mounted Rib by Pulsating Flow

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. We are especially focusing on a combination of ribs and pulsation flow that can be observed in blood flow in the living body. Our previous reports have shown this combination enhances heat trasnfer around the rib. The level of the heat transfer performance is dependent on the rib height. In addition, it was possible that the optimal rib height exist. On the other hand, the relationship between the heat transfer enancement and time-averaged Reynolds number shoud be investigated. In this report, we invistigated a effect of the Reynolds number on the level of the heat transfer enhancement by the combination of the rib and the pulsating flow through 3D-CFD analysis. It is found that the heat trasnfer enhancement by th epulsating flow can be confirmed regardles of the condition of the time-averaged Reynolds number. On the other hand, the change of the heat transfer efficiency is dependent on the time-averaged Reynolds number.