回転二重円筒内の液膜流動構造の解明

抄録

In order to achieve efficient cooling of motors, this study aims to clarify the effects of changes in rotation speed and flow rate on the flow structure of a liquid film in a rotating coaxial cylinder simulating a motor. To quantify the cooling performance, the flow structure of the liquid film in the narrow space is clarified. The experimental results show that the liquid flow velocity in the nozzle and the thickness of the liquid film on the cylindrical surface increase with the increase in the rotation speed. This was especially noticeable at the near part of liquid inlet. The flow at the far from the liquid inlet is greatly affected by the flow rate.