A dynamic stall model for airfoils with deformable trailing edges

Peter Bjørn Andersen, Mac Gaunaa, Christian Bak, Morten Hartvig Hansen

    Research output: Contribution to journalJournal articleResearchpeer-review


    The present work contains an extension of the Beddoes-Leishman-type dynamic stall model. In this work, a deformable trailing-edge flap has been added to the dynamic stall model. The model predicts the unsteady aerodynamic forces and moments on an airfoil section undergoing arbitrary motion in heave, lead-lag, pitch, trailing-edge flapping. In the linear region, the model reduces to the inviscid model, which includes the aerodynamic effect of a thin airfoil with a deformable camberline in inviscid flow. Therefore, the proposed model can be considered a crossover between the work of Gaunaa for the attached flow region and Hansen et al. The model is compared qualitatively to wind tunnel measurements of a Riso/ B1-18 blade section equipped with deformable trailing-edge flap devices in the form of piezoelectric devices. Copyright © 2009 John Wiley & Sons, Ltd.
    Original languageEnglish
    JournalWind Energy
    Issue number8
    Pages (from-to)734-751
    Publication statusPublished - Nov 2009


    • Wind energy
    • Aeroelastic Design
    • trailing-edge flaps
    • dynamic stall
    • shed vorticity model
    • unsteady aerodynamics
    • smart material


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