Patent ID: 7914259
Filing Date: 2011-03-29
Classification: F03D,F05B,Y02E,Y02P

Abstract:
1. A wind turbine blade comprising a first row of vortex generators arranged in a longitudinal direction of the blade on a suction side thereof, wherein a height of said vortex generators comprising the first row in a direction away from a surface of the blade is within the range of 0.1% to 0.65% of a chord length of the blade, and a second row of vortex generators arranged in the longitudinal direction of the blade on the suction side thereof, wherein a height of said vortex generators comprising the second row in a direction away from the surface of the blade is within the range of 0.1% to 1% of the chord length, wherein the first and second rows of vortex generators are provided along at least 10% of a longitudinal extent of the blade, and the second row of vortex generators extends at a chord wise distance from a leading edge in the range from 20% to 50% of the chord length further away from the leading edge than the first row of vortex generators.