Wind turbine blades can generate aerodynamic noise as air moves over their surfaces; because of this, it's important to prioritise noise reduction when it comes to turbine design. In 2015, engineers at LM Wind Power tested serrated panels fitted to the blades of three wind turbines and measured how effectively they reduced noise. According to a 2016 paper published in the Journal of Physics: Conference Series, the turbines had rated capacities of 2–3 megawatts while the rotor diameters ranged from 90 to 122 metres. After wind tunnel testing, the three validation campaigns’ field measurements showed noise reductions of about 1.5 decibels or more, and the results were obtained through different serration designs on the three turbines. The research examined the panels’ performance based on the geometry, positioning, and construction and addressed the challenge of reducing turbine noise while maintaining the aerodynamic performance and structural reliability necessary for operating wind turbines.
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