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Aero-Acoustic Computations of Wind Turbines

[+] Author Affiliations
Wen Zhong Shen, Jess A. Michelsen, Jens No̸rkær So̸rensen

Technical University of Denmark, Lyngby, Denmark

Paper No. WIND2002-43, pp. 216-222; 7 pages
doi:10.1115/WIND2002-43
From:
  • ASME 2002 Wind Energy Symposium
  • ASME 2002 Wind Energy Symposium
  • Reno, Nevada, USA, January 14–17, 2002
  • Conference Sponsors: ASME
  • ISBN: 1-56347-476-X
  • Copyright © 2001 by The American Institute of Aeronautics and Astronautics, Inc. and ASME

abstract

A numerical algorithm for acoustic noise generation is extended to 3D flows. The approach involves two parts comprising a viscous incompressible flow part and an inviscid acoustic part. In order to simulate noise generated from a wind turbine, the incompressible and acoustic equations are written in polar coordinates. The developed algorithm is combined with a so-called actuator-line technique in which the loading is distributed along lines representing the blade forces. Computations are carried out for the 500kW Nordtank wind turbine equipped with three LM19 blades.

Copyright © 2001 by The American Institute of Aeronautics and Astronautics, Inc. and ASME

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