Flow modification device for rotor blade in wind turbine

A wind turbine comprising:

• a plurality of rotor blades, each of the plurality of rotor blades having exterior surfaces defining a pressure side, a suction side, a leading edge, and a trailing edge extending between a tip and a root, each of the plurality of rotor blades further defining a span and a chord;
• and,
• a noise reducer configured on an exterior surface of one of the plurality of rotor blades, the noise reducer comprising a plurality of noise reduction features, each of the plurality of noise reduction features defining a centerline,
• wherein in a planform view the centerline of each of the plurality of noise reduction features is approximately parallel to a local flow streamline for that noise reduction feature at the trailing edge of the rotor blade.

A rotor blade assembly for a wind turbine, comprising:

• a rotor blade having exterior surfaces defining a pressure side, a suction side, a leading edge, and a trailing edge extending between a tip and a root, the rotor blade further defining a span and a chord;
• and,
• a flow modification device configured on an exterior surface of the rotor blade and comprising a flow modification feature, the flow modification feature defining a centerline,
• wherein in a planform view the centerline of the flow modification feature is aligned with respect to a local flow streamline for the flow modification feature at the trailing edge of the rotor blade.