On addressing wind turbine noise with after-market shape blade add-ons - ScienceDirect
When stricter noise limits are enforced to legacy wind turbines already deployed, actions need to be taken. In this paper, we present a solution of retrofitting wind turbine blades with additional outer layer skins that change their aeroacoustic footprint. An optimization design framework produces add-ons shapes that, when attached to blades, reduce their noise without compromising aerodynamic performance......
