垂直軸型風車トルク特性における有効取付角の影響

抄録

In this study, differences of the dynamically measured torque of the wind turbine with a circular-arc airfoil and the static predictive torque based on the static wing characteristic of the circular-arc airfoil are investigated by wind tunnel experiments. There are actual setting angles that the static predictive torque accords with the dynamically measured torque for each azimuth angle on the geometric relations of the flow field and the blade. The tendency of the variation of the actual setting angle with respect to the azimuth angle is different between the upstream region and the downstream region. This suggests that a state of the flow field is greatly different between the upstream region and the downstream region. In the upstream region by using an appropriately fixed actual setting angle, static prediction torque variation calculated by using static airfoil characteristics is close to the dynamically measured torque variation.