Scale-adaptive simulation (SAS) of dynamic stall on a wind turbine

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Abstract

Scale-adaptive simulation (SAS) approach is employed to investigate the complex dynamic stall phenomena occurring on a wind turbine blade. The results are com-pared with the more popular less computationally-expensive unsteady Reynolds-averaged Navier-Stokes (URANS) approach where the latter is validated using three sets of experimental data. The comparison reveals that the two approaches have similar predictions of the instant of the formation/bursting/shedding of the laminar separation bubble (LSB) and dynamic stall vortex (DSV), the size of the LSB and aerodynamic loads during the upstroke. This is while the two approach-es exhibit dissimilar predictions of the trailing-edge vortex characteristics, its in-teraction with the DSV, number of secondary vortices and aerodynamic loads during the downstroke.
Original languageEnglish
Title of host publicationProgress in Hybrid RANS-LES Modelling (HRLM 2018)
EditorsY. Hoarau, S.H. Peng, D. Schwamborn, A. Revell, C. Mockett
PublisherSpringer
Pages323-333
Number of pages11
ISBN (Electronic)978-3-030-27607-2
ISBN (Print)978-3-030-27606-5
DOIs
Publication statusPublished - 2 Nov 2019

Publication series

NameNotes on Numerical Fluid Mechanics and Multidisciplinary Design
Volume143
ISSN (Print)1612-2909
ISSN (Electronic)1860-0824

Keywords

  • Turbulence modeling
  • Scale-adaptive simulation (SAS)
  • Hybrid RANS/LES
  • Large eddy simulation (LES)
  • URANS
  • Wind turbine
  • Aerodynamics
  • Dynamic stall
  • Vertical axis wind turbine (VAWT)
  • Wind energy
  • Blade-wake interaction

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