WINDMILL BLADE AND METHOD FOR LOCATING VORTEX GENERATOR TO WINDMILL BLADE

摘要

To provide a vortex generator of an appropriate size with respect to a size of a windmill blade.SOLUTION: For a windmill blade with a vortex generator having a plurality of fins, a height H(m) of each fin and a maximum cord length C(m) of the windmill blade satisfies the following: H/C=0.3 to 0.9×10. The height H of the fin may satisfy the following relationship with respect to a boundary layer thickness δat a rated peripheral velocity rate in a blade deterioration state: H≥0.1δ. A method for locating the vortex generator to the windmill blade comprises a pair of fins arranged linearly symmetrically with respect to a line segment along a cord direction of the windmill blade.SELECTED DRAWING: Figure 12