A123 オロイド翼まわりの流れの可視化(第2報)

抄録

It is said that the so-called Oloid wing would enable to stir the fluid effectively with less energy. However the detail of its phenomenon is not clarified yet, particularly the comparison of the Oloid and the conventional propeller-type stirring device has not been done. This paper deals with the flow visualization around the Oloid wing and the propeller type machine. For the visualization of the flow, the micro bubble method is employed here and one of the PIV method is used for the analysis of digital recorded images, not for the velocity measurement but for the analysis of the visualization images. It is observed that the flow caused by the propeller is concentrated and meandered near the centerline of the machine, while the flow of the Oloid shows strong unsteadiness in wide region.