NOISE REDUCTION MEANS FOR A ROTOR BLADE OF A WIND TURBINE

摘要

The invention relates to a rotor blade (20) of a wind turbine (10). The rotor blade (20) comprises a pressure side (251), a suction side (252), a leading edge section (24), and a trailing edge section (23) with a trailing edge (231). The rotor blade (20) comprises a noise reduction means (30) with at least one aerodynamic device (31) for manipulating an airflow (32) flowing from the leading edge section (24) to the trailing edge section (23). The airflow (32) builds up a boundary layer with vortices adjacent to the surface of the rotor blade (20). The aerodynamic device (31) is located at the trailing edge section (23) of the rotor blade (20), and is arranged such that it is able to split up a vortex of the boundary layer into several smaller sub-vortices. Thus noise that is generated by interaction of the airflow (32) with the rotor blade (20) may be reduced.