Posters

Come meet the poster presenters to ask them questions and discuss their work

Check the programme for our poster viewing moments. For more details on each poster, click on the poster titles to read the abstract. On Wednesday, 6 April at 15:30-16:15, join us on Level 3 of the Conference area for the Poster Awards!

PO213: Influence of blade deflections on wind turbine noise directivity

Andrea P. C. Bresciani, Ph.D. student and research engineer, University of Twente

Abstract

In this paper, the effect of blade deflections on wind turbine noise directivity is established using fast turn-around numerical methods. The blade element momentum theory used for the aeroelastic simulations is coupled with a RANS-informed Amiet's model for the aeroacoustic modelling of trailing-edge noise. These methods are applied to the NREL 5 MW wind turbine for rigid and flexible blades. The noise footprints and the overall sound pressure level show significant differences between the rigid and flexible cases for listeners close to the rotor plane. This effect has been attributed to the flapwise angular deflection of the wind turbine blade. Furthermore, the symmetry of the results with respect to the rotor plane is lost when the flapwise deflection is considered.