FeatherEdge Turbine Noise Reduction Technology tests show promising results

May 2023

Biome's FeatherEdge™ solution to turbine noise - inspired by design that enables an owl’s silent flight - has achieved a promising result in wind tunnel testing.

The innovative trailing edge serration technology achieved noise reduction of 8 dB off a baseline Risø B1-18 airfoil operating under similar conditions.

The testing took place January 2023 in the state-of-the-art Poul la Cour Tunnel (PLCT) at DTU Wind Energy, Risø Campus, Roskilde, Denmark. It is one of the largest university owned wind tunnels in the world, and the ideal location to complete a measurement campaign of aerodynamic coefficients and noise measurements.

Christian Bak, professor in rotor aerodynamics for wind turbines at DTU Wind and Energy Systems, comments, “The noise emission of wind turbines is one of the main obstacles for the increase of onshore wind installations all over the world. Trailing edge serrations have been commercially applied to reduce the noise emission of wind turbines, but it is believed that even more noise reduction can be achieved with optimized serration designs. In this context the Poul la Cour Tunnel has shown its efficiency and value by validating the FeatherEdge design at airfoils with the representative flow speeds and dimensions”.

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