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Wind Tunnel Study of a Generic Wind Turbine Nacelle Model

[+] Author Affiliations
Marinos Manolesos

FLOWFIELD Consulting Company, Athens, Greece

Panagiotis Chaviaropoulos

iWind Renewables, Athens, Greece

Paper No. GT2017-63362, pp. V009T49A003; 6 pages
doi:10.1115/GT2017-63362
From:
  • ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition
  • Volume 9: Oil and Gas Applications; Supercritical CO2 Power Cycles; Wind Energy
  • Charlotte, North Carolina, USA, June 26–30, 2017
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-5096-1
  • Copyright © 2017 by ASME

abstract

Three versions of a generic horizontal axis wind turbine nacelle model were tested in a wind tunnel. Force and wake velocity measurements were performed at a Reynolds number of 4.2e5 based on the complete length of the nacelle and the spinner. The effect of main body corner shape was examined as well as that of the spinner. It was found that rounded corners can lead to significant reduction in the aerodynamic forces experienced by the nacelle. At the same time, however, smooth curve surfaces cause instabilities in the separation location, which lead to sudden drops in the lift force. In terms of aeroelastic behavior this is an undesirable feature that leads to negative aerodynamic damping and structures prone to galloping.

Copyright © 2017 by ASME

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