回転円すい体の外表面を上昇する液膜流れ  [in Japanese] Liquid Film Flow Rising along the Outer Surface of the Rotating Cone  [in Japanese]

We have investigated fluid flow characteristics of liquid film flow rising along the outer surface of the rotating cone. The fluid is given a centrifugal force due to the rotation of cone, while strong surface tension maintains the centrifugal force at the outer surface of the liquid film flow. Therefore, the fluid does not spread outward the cone, but goes up along it. We have visualized the interesting flow phenomena with a high-speed video camera. In addition, we have measured the correlation between the wetted radius, rotation and flow rates of rising film flow.