渦輪衝突時の壁面近傍流動と瞬時熱流束の関係

抄録

To improve the thermal efficiency of automobile engines, it is necessary to reduce cooling loss by clarifying the heat transfer mechanism. The purpose of this study is to develop a general measurement method for investigating the relationship between flow and heat transfer to quantitatively evaluate the cooling loss. We investigated the relationship between the flow near the wall and the heat flux using a hot wire anemometer and a MEMS heat flux sensor in a special field where a simple flow structure can be reproduced, i.e. a collision of laminar vortex ring to the wall. Double peak in the heat flux is observed during the vortex passage on the sensor.