マグナス風車用フィン付き回転円柱の揚力増加メカニズム

抄録

In order to clarify the mechanism of lift enhancement for a spiral Magnus windmill, wind tunnel experiments were carried out by using a rotating cylinder with fins. Spiral Magnus is a unique wind turbine system that rotates with cylinders which have spiral-shaped fins coiled around them instead of the usual propeller-like blades, and the spiral Magnus windmill shows high power generation performance. However, its mechanism has not been fully elucidated. In the present study, three models (cylinder with no fins, straight fins and spiral fins) were installed, and fluid force measurements were performed by a strain gauge force balance. The PIV system was also used to better understand the flow fields around the cylinder.