An overview of the acoustical activities at the National Wind Technology Center. Journal Article uri icon



  • The National Wind Technology Center (NWTC) has been involved in wind turbine acoustics since the 1980s. The areas of work include standards development, measurement and analysis, prediction code development, and acoustic arrays. Most measurements are conducted to the IEC 61400-11, a standard specifically for acoustic measurements of wind turbines. The NWTC is involved in the development of this standard. The standard results in reports of overall levels as well as tonality. The NWTC has also developed a semiempirical acoustic noise prediction code for wind turbines. Validation of this code with test data (both wind tunnel and field measurements) shows reasonable prediction accuracy for both airfoil self noise and turbulent inflow noise. Lastly, to assist with wind turbine noise reduction and to identify the loudest components an acoustic array was developed to better locate noise on wind turbines. This paper will describe the NWTC’s past and current activities in wind turbine acoustics including test methods and results.

publication date

  • April 1, 2009

has restriction

  • closed

Date in CU Experts

  • April 21, 2014 11:27 AM

Full Author List

  • Huskey A; Patrick M; van Dam J; Simley E; Palo S

author count

  • 5

Other Profiles

International Standard Serial Number (ISSN)

  • 0001-4966

Electronic International Standard Serial Number (EISSN)

  • 1520-8524

Additional Document Info

start page

  • 2624

end page

  • 2624


  • 125


  • 4_Supplement