| 摘要 |
<p>A wind turbine blade is described having aerodynamic flaps at the root section of the blade. The flaps are provided on that section of the blade having a circular cross-sectional profile, e.g. a circular root end and/or a cylindrical hub extender. The flaps act to delay initial flow separation for the circular profile as well as provide more well-defined flow separation, thereby reducing the drag and increasing the lift of the root section of the blade. The use of such flaps on a blade result in an increase in Annual Energy Production for the blade design, without the disadvantages associated with traditional aerodynamic shells or fairings.</p> |
