An aeroacoustic analysis of wind turbines

Research output: Chapter in Book/Report/Conference proceedingConference contribution

17 Scopus citations

Abstract

This paper describes computational aeroacoustic methods that are being applied to predict the noise radiated by wind turbines. Since the wind turbine noise problem is very challenging, only some of the important noise sources and mechanisms are being considered. These are airfoil self-noise, the effects of blade rotation, and the propagation of sound over large distances. Two aspects of airfoil self-noise are being studied. The first is the relatively low frequency noise generated by deep stall and the second is trailing edge noise. The noise associated with blade rotation includes the effects of blade rotation on the blade aerodynamics, incoming gusts, incoming atmospheric turbulence and wind shear. The unsteady flow simulations are coupled to the radiated noise field with the permeable surface Ffowcs Williams - Hawkings formulation. For long-range noise propagation predictions, methods based on solutions of the linearized Euler equations or the Parabolic Equation approximation are discussed. Alternative methods for the implementation of boundary conditions for the propagation studies are also included.

Original languageEnglish (US)
Title of host publicationCollection of ASME Wind Energy Symposium Technical Papers AIAA Aerospace Sciences Meeting and Exhibit
Pages518-528
Number of pages11
StatePublished - Jul 29 2004
EventCollection of the 2004 ASME Wind Energy Symposium Technical Papers at the 42nd AIAA Aerospace Sciences Meeting and Exhibit - Reno, NV, United States
Duration: Jan 5 2004Jan 8 2004

Publication series

NameCollection of ASME Wind Energy Symposium Technical Papers AIAA Aerospace Sciences Meeting and Exhibit

Other

OtherCollection of the 2004 ASME Wind Energy Symposium Technical Papers at the 42nd AIAA Aerospace Sciences Meeting and Exhibit
CountryUnited States
CityReno, NV
Period1/5/041/8/04

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All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Morris, P. J., Long, L. N., & Brentner, K. S. (2004). An aeroacoustic analysis of wind turbines. In Collection of ASME Wind Energy Symposium Technical Papers AIAA Aerospace Sciences Meeting and Exhibit (pp. 518-528). (Collection of ASME Wind Energy Symposium Technical Papers AIAA Aerospace Sciences Meeting and Exhibit).