STUDY ON A WIND TURBINE WITH A CIRCULAR CYLINDER DRIVEN BY LONGITUDINAL VORTEX SYSTEM

抄録

The study aims to improve the performance of a new horizontal type of wind turbine with a circular cylinder driven by longitudinal vortex. First, a simple model was numerically used to clarify the generation mechanism of longitudinal vortex. The necklace shaped vortex forms steadily behind the cylinder and contributes to generation of constant lift forces on the cylinder. Consequently, it was found that the gap between the cylinder and the plate plays a crucial role in inducing the vortex. The optimal gap was clarified by numerical simulation. Finally, enhancement of wind turbine performance was confirmed numerically and experimentally.