... A model with the DU-W-300 profile, whose performance was initially measured with a conventional smooth coating. The researchers then compared the results with the same model with the functional Riblet coating. The measurements were carried out at two different wind speeds (50 m/s and 75 m/s) and different angles of attack. According to the scientists, the increase in power generated increases the annual electricity yield of the turbine by five to six percent. This could also reduce the noise emissions of the wind turbine.