脈動流とリブの組み合わせによる冷却チャネル内の伝熱促進に対するリブ高さの影響

抄録

This study aims to develop a novel water-cooled device that increases heat transfer performance while inhibiting the increase of pressure drop characteristic. The effectiveness 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, on the heat transfer enhancement have been reported from several researchers. The level of the heat transfer enhancement by the pulsating flow can be increased by the combination with the ribs. In this report, in order to optimize the dimensions of the ribs from the viewpoint of the heat transfer efficiency, an investigation of the flow pulsation phenomena around the rib was conducted through 2D-CFD analysis while changing the height of the rib. It was found that the level of the heat transfer enhancement was dependent on the rib height.