Aeroacoustics

Aeroacoustics

Venue:      DTU Risø Campus, Niels Bohr auditorium, building 112, Frederiksborgvej 399, 4000 Roskilde

Date:         19 June 2024

We often want to reduce noise generated from flows. Examples are wind turbines and fans. To reduce noise, the sources of the noise must be identified and the physical mechanisms must be analysed. One of the main purposes of the Poul la Cour Tunnel at Risø is to facilitate high quality measurements of aeroacoustics on airfoils at high Reynolds numbers. We will visit the wind tunnel and hear about at measurement techniques related to aeroacoutics. We will also get presentations about at computational methods and applications for wind turbines and fans.

Programme

Time    
9:00 Registration and Coffee  
9:30 Welcome DANSIS boardmember, Denmark
9:40 Introduction to aeroacoutics Franck Bertagnolio, DTU Wind Energy, Denmark
10:10 Establishment of an aeroacoustic wind tunnel Christian Bak, DTU Wind Energy, Denmark
10:40 Coffee break  
11:00 Beamforming for aeroacoustic measurements in wind tunnels Pieter Sijtsma, PSA3, Netherlands
11:40 Lunch and visit to Poul la Cour Tunnel  
13:30 Computational methods for aeroacoustics Roland Ewert, DLR, Germany
14:10 Trailing edge noise measurements on wind turbine blade sections Andreas Fischer, DTU Wind Energy, Denmark
14:40 Coffee break  
15:10 Aeroacoustic considerations in wind turbine design Michael Asheim, SGRE, Denmark
15:40 Challenges with fan noise Gabriel Hernandes, Multiwing, Denmark
16:10 Closing remarks Knud Erik Meyer, DANSIS chairman, Denmark