Validation of an Aero-Acoustic Wind Turbine Noise Model Using Advanced Noise Source Measurements of a 500kW Turbine

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Abstract

The measurement of a 500 kW stall-regulated wind turbine is investigated. Microphones located relatively close to the wind turbine are used to measure its acoustic emission. The operational conditions of the turbine, such as wind speed, are simultaneously monitored. In parallel, a wind turbine rotor noise model is presented. It includes the main sources of aeroacoustic noise from wind turbines: turbulent inflow, trailing edge and stall noise. The noise measured by one microphone located directly downstream of the wind turbine is compared to the model predictions at the microphone location. A good qualitative agreement is found. When wind speed increases, the rotor noise model shows that at high frequencies the
stall noise becomes dominant. It also shows that turbulent inflow noise is dominant at low frequencies for all wind speeds and that trailing edge noise is dominant at low wind speeds and at frequencies above 200 Hz.
Original languageEnglish
Title of host publication2016 Proceedings of 16th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery
Number of pages9
Publication date2016
Publication statusPublished - 2016
Event16th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery - Honolulu, Hawaii, United States
Duration: 10 Apr 201615 Apr 2016

Conference

Conference16th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery
CountryUnited States
CityHonolulu, Hawaii
Period10/04/201615/04/2016

Keywords

  • Wind Turbine Noise
  • Field Measurements
  • Modelling
  • Code Validation
  • Turbulent Inflow Noise
  • Trailing Edge Noise
  • Stall Noise

Cite this

Bertagnolio, F., Aagaard Madsen , H., Fischer, A., & Bak, C. (2016). Validation of an Aero-Acoustic Wind Turbine Noise Model Using Advanced Noise Source Measurements of a 500kW Turbine. In 2016 Proceedings of 16th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery