縦渦によって駆動する円柱翼風車の動力特性に及ぼす剥離点位置の影響

抄録

When a circular cylinder is used as the blade of a horizontal axis wind turbine and a ring-shaped flat plate is installed in the wake, the longitudinal vortex shedding from near the intersection generates a steady lift force on the cylinder. In this study, the relationship between the flow field around the blade and the power characteristics of a longitudinal vortex wind turbine is discussed based on the results of numerical simulation. The relative angle of attack of the main flow to the cylindrical blade was adjusted according to the rotational speed of the blade. It was confirmed that the torque obtained by the cylindrical blade increased in a specific range of the relative angle of attack by controlling the separation point.