Parametric approximation of airfoil aerodynamic coefficients at high angles of attack

Witold Robert Skrzypinski, Frederik Zahle, Christian Bak

    Research output: Contribution to conferencePosterResearchpeer-review

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    Abstract

    Three methods for estimating the Cl and Cd curves at high AOAs were analyzed in this work. A method utilizing even sine and cosine functions was further developed. It was determined that between 160°and -160°AOA, the aerodynamic coefficients may be obtained with computationally inexpensive steady 2D CFD. In this work, reference aerodynamic coefficients were used directly at those AOAs. Reference aerodynamic coefficients were also used directly at AOAs between -30°and 30°as in this region the data is typically either available or may be obtained with computationally inexpensive 2D CFD. At other AOAs, the present approximation method produced Cl, Cd, and Cm curves satisfactorily close to the reference.

    Original languageEnglish
    Publication date2014
    Number of pages1
    Publication statusPublished - 2014
    EventEuropean Wind Energy Conference & Exhibition 2014 - Fira de Barcelona Gran Via, Barcelona, Spain
    Duration: 10 Mar 201413 Mar 2014
    http://www.ewea.org/annual2014/

    Conference

    ConferenceEuropean Wind Energy Conference & Exhibition 2014
    LocationFira de Barcelona Gran Via
    Country/TerritorySpain
    CityBarcelona
    Period10/03/201413/03/2014
    Internet address

    Keywords

    • Aerodynamic coefficients
    • Lift
    • Drag
    • Moment
    • high angles of attack
    • Separation
    • Modelling
    • Harmonic functions
    • Even sine
    • Even cosine

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