縦渦による揚力を動力とした角柱翼風車に関する流れ場の解析

抄録

If a rectangular cylinder with zero attack angle is used in a wind turbine, it never rotates. However, we found that it can rotate as a wind turbine when a ring plate is located in the wake region. The blade is driven by the lift force caused by a necklace type of the longitudinal vortex formed at a cross section of the blade and the ring plate. In this study, the effect of the form factors, such as a gap between the blade and the ring plate and the attack angle of the blade, on the characteristic of the turbine is experimentally examined. As a result, we confirmed that the rectangular cylinder could be a wind turbine blade and the suitable attack angle to maximize the performance existed.