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Detached-Eddy Simulation of Flow Around the NREL Phase-VI Blade

[+] Author Affiliations
J. Johansen, N. N. So̸rensen

Riso̸ National Laboratory, Roskilde, Denmark

J. A. Michelsen

Technical University of Denmark, Lyngby, Denmark

S. Schreck

National Renewable Energy Laboratory, Golden, CO

Paper No. WIND2002-32, pp. 106-114; 9 pages
doi:10.1115/WIND2002-32
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 © 2002 by Riso̸ National Laboratory and ASME

abstract

The Detached-Eddy Simulation model implemented in the computational fluid dynamics code, EllipSys3D, is applied on the flow around the NREL Phase-VI wind turbine blade. Results are presented for flow around a parked blade at fixed angle of attack and a blade pitching along the blade axis. Computed blade characteristics are compared with experimental data from the NREL/NASA Ames Phase-VI unsteady experiment. The Detached-Eddy Simulation model is a method for predicting turbulence in computational fluid dynamics computations, which combines a Reynolds Averaged Navier-Stokes method in the boundary layer with a Large Eddy Simulation in the free shear flow. The present study focuses on static and dynamic stall regions highly relevant for stall regulated wind turbines. Computations do predict force coefficients and pressure distributions fairly good and results using Detached-Eddy Simulation show considerably more three-dimensional flow structures compared to conventional two-equation Reynolds Averaged Navier-Stokes turbulence models, but no particular improvements are seen on the global blade characteristics.

Copyright © 2002 by Riso̸ National Laboratory and ASME

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