Aeroacoustics

• explain the relevance of wind turbine noise for society
• interpret and model basic acoustic wave motion
• interpret and model the effect of flow on the acoustic wave motion
• outline the mechanisms of flow turbulence and aerodynamic noise generation
• apply the concepts above to identify and model aerodynamic noise sources of a wind turbine
• apply techniques to reduce and control noise sources of a wind turbine
• apply your knowledge of acoustic wave motion to atmospheric sound propagation
• solve an aeroacoustic problem numerically
• measure characteristics of a sound wave
• process data from microphone array measurements
• conduct and process data of an aeroacoustic wind tunnel experiment

Aero-acoustics concepts, Linear wave equation and acoustic analogy, Noise mechamisms of wind turbines, Noise prediction models, Low noise wind turbine design, aeroacoustic measurements, sound propagation, Parabolic wave equations, Computational aero-acoustics, Conduction of a pre-defined wind tunnel experiment in the Poul La Cour wind tunnel and analysis of the data

46110/41129, Knowledge of aerodynamics and turbulence corresponding to 46110-41323-41129 or similar.
Basic knowledge of Python or Matlab.

Lectures and exercises