Wind turbine noise prediction
We develop models for the prediction of wind turbine noise. For large wind turbines, the main source of noise is trailing edge noise. Trailing edge noise is generated when a turbulent gust reaches the trailing edge. Amiet has shown how to predict trailing edge noise for a fixed airfoil. He later extended his theory to predict trailing edge noise for rotating airfoils. However, there were disagreements on how to do this correctly. Our group has managed to resolve these disagreements and to show how to predict trailing edge noise for rotating airfoils.
Jet noise sources
Jet noise is one of the main sources of aircraft noise. It is generated by the high speed flow at the exit of turbofan engines. An important problem in reducing jet noise is our lack of understanding of the source of noise. The noise source is hidden within the flow. We have invented a technique that allows us to identify the noise source. This will help us understand and reduce jet noise.
