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Simulation of Wake Interactions in Wind Farms Using an Immersed Wind Turbine Model

[+] Author Affiliations
S. Jafari, N. Chokani, R. S. Abhari

ETH Zurich, Zurich, Switzerland

Paper No. GT2013-96035, pp. V008T44A026; 9 pages
doi:10.1115/GT2013-96035
From:
  • ASME Turbo Expo 2013: Turbine Technical Conference and Exposition
  • Volume 8: Supercritical CO2 Power Cycles; Wind Energy; Honors and Awards
  • San Antonio, Texas, USA, June 3–7, 2013
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-5529-4
  • Copyright © 2013 by ASME

abstract

The accurate modelling of the wind turbine wakes in complex terrain is required to accurately predict wake losses. In order to facilitate the routine use of computational fluid dynamics in the optimised micrositing of wind turbines within wind farms, an immersed wind turbine model is developed. This model is formulated to require grid resolutions that are comparable to that in microscale wind simulations. The model in connection with the k-ω turbulence model is embedded in a Reynolds-Averaged Navier Stokes solver. The predictions of the model are compared to available wind tunnel experiments and to measurements at the full-scale Sexbierum wind farm. The good agreement between the predictions and measurements demonstrates that the novel immersed turbine model is suited for the optimised micrositing of wind turbines in complex terrain.

Copyright © 2013 by ASME

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