Wind turbine blades and wind turbine systems that include a co-flow jet

A wind turbine system comprising:

• a tower, a nacelle attached to the tower, a hub attached to the nacelle, and a blade attached to the hub;
• the blade having a main body, the main body having a root, a tip, a front, wind facing surface, a rear surface, a first portion, a second portion, a leading edge, a trailing edge, a plurality of injection openings, a plurality of suction openings, and a plurality of channels, the first portion extending from the root toward the tip, the first portion having a first cylindrical cross-sectional shape and the second portion having a second cross-sectional shape that is different than the first cylindrical cross-sectional shape, each injection opening of the plurality of injection openings disposed on the rear surface between the leading edge and the trailing edge, an injection opening of the plurality of injection openings disposed on the first portion and in a cross-section of the first portion disposed at an angle relative to a relative velocity of said wind turbine system and a central portion of the main body that is equal to about 90 degrees, each suction opening of the plurality of suction openings disposed on the rear surface, each channel of the plurality of channels extending from a suction opening of the plurality of suction openings to an injection opening of the plurality of injection openings;
• and
• a plurality of fluid pressurizers, a fluid pressurizer of the plurality of fluid pressurizers disposed within each channel of the plurality of channels.

A wind turbine system comprising:

• a tower, a nacelle attached to the tower, a hub attached to the nacelle, and a blade attached to the hub;
• the blade having a main body and a plurality of fluid pressurizers, the main body having a root, a tip, a front, wind facing surface, a rear surface, a first portion, a second portion, a leading edge, a trailing edge, a plurality of injection openings, a plurality of suction openings, and a plurality of channels, the first portion extending from the root toward the tip, the first portion having a first cylindrical cross-sectional shape and the second portion having a second cross-sectional shape that is different than the first cylindrical cross-sectional shape, each injection opening of the plurality of injection openings disposed on the rear surface between the leading edge and the trailing edge, an entire injection opening of the plurality of injection openings disposed on the first portion and in a cross-section of the first portion disposed at an angle relative to a relative velocity of said wind turbine system and a central portion of the main body that is equal to about 90 degrees, each suction opening of the plurality of suction openings disposed on the rear surface, each channel of the plurality of channels extending from a suction opening of the plurality of suction openings to an injection opening of the plurality of injection openings;
• and
• a fluid pressurizer of the plurality of fluid pressurizers disposed within each channel of the plurality of channels.