Aerodynamic noise prediction for a wind turbine using numerical flow simulations and semi-empirical modelling approaches

• In this paper, aerodynamic and aero-acoustic simulations are performed for a small horizontal axis wind turbine, suitable for the integration of wind energy in urban and peri-urban areas. Detached-eddy simulation (DES) of compressible flow is performed to compute the flow field over the wind turbine. The far-field noise is computed using the Ffowcs - Williams and Hawkings acoustic analogy. Furthermore, the blade element momentum theory is used with a semi-empirical acoustic modeling approach to predict the wind turbine noise. The acoustic modeling approach is based on a semi-empirical formulation for airfoil self noise and an analytic formulation for inflow noise.

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Maskinteknik -- Strömningsmekanik och akustik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Mechanical Engineering -- Fluid Mechanics and Acoustics (hsv//eng)

Nyckelord

Acoustic noise

Aeroacoustics

Aerodynamics

Turbomachine blades

Wind power

Acoustic analogy

Aero-acoustic simulation

Aerodynamic noise

Blade element momentum theory

Detached eddy simulations

Horizontal axis wind turbines

Numerical flow simulations

Wind turbine noise

Publikations- och innehållstyp

vet (ämneskategori)

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