publication . Article . 2017

Numerical simulation of transitional flow on a wind turbine airfoil with RANS-based transition model

Ye Zhang; Zhengzhong Sun; Alexander van Zuijlen; Gerard van Bussel;
Open Access
  • Published: 08 Jun 2017 Journal: Journal of Turbulence, volume 18, pages 879-898 (eissn: 1468-5248, Copyright policy)
  • Publisher: Informa UK Limited
  • Country: United Kingdom
Abstract
This paper presents a numerical investigation of transitional flow on the wind turbine airfoil DU91-W2-250 with chord-based Reynolds number Rec = 1.0 × 106. The Reynolds-averaged Navier–Stokes based transition model using laminar kinetic energy concept, namely the k − kL − ω model, is employed to resolve the boundary layer transition. Some ambiguities for this model are discussed and it is further implemented into OpenFOAM-2.1.1. The k − kL − ω model is first validated through the chosen wind turbine airfoil at the angle of attack (AoA) of 6.24° against wind tunnel measurement, where lift and drag coefficients, surface pressure distribution and transition locati...
Subjects
arXiv: Physics::Fluid Dynamics
free text keywords: Physics, Laminar flow, Airfoil, Meteorology, Boundary layer, Turbulence, Mechanics, Flow separation, Classical mechanics, Wind-turbine aerodynamics, Wind tunnel, Laminar sublayer
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