Leading edge roughness is known to influence the aerodynamic performance of wings and airfoil sections. Aerodynamic tests show that these effects vary with the type and texture of the applied roughness. The quantification of the relationship between different types of roughness is not very clear. This makes the comparison of results from different tests difficult. An attempt has been made to find a relationship between randomly distributed roughness using cylinders of different heights and densities, roughness using ballotini, and equivalent sand grain roughness. A CFD method based on the Cebeci-Chang roughness model was used to generate correlations with experimental data. It is found that the variation of the size and density of individual roughness elements can be represented using one roughness parameter, Rp, which is equivalent to the sand grain roughness parameter used in the Cebeci-Chang model. Numerical predictions using this approach correlate well with two dimensional test results.


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    Titel :

    Prediction of Airfoil Performance with Leading Edge Roughness


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Kafyeke, Fassi (Autor:in) / Tezok, Fatih (Autor:in) / Cebeci, Tuncer (Autor:in)

    Kongress:

    World Aviation Congress & Exposition ; 1998



    Erscheinungsdatum :

    1998-09-28




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Prediction of Airfoil Performance with Leading Edge Roughness

    Tezok, F. / Kafyeke, F. / Cebeci, T. | British Library Conference Proceedings | 1998


    Prediction of airfoil performance with leading edge roughness

    Tezok, Fatih / Kafyeke, Fassi / Cebeci, Tuncer | AIAA | 1998


    Realistic Leading-Edge Roughness Effects on Airfoil Performance

    Ehrmann, Robert S. / White, Edward B. / Maniaci, David C. et al. | AIAA | 2013


    Realistic Leading-Edge Roughness Effects on Airfoil Performance

    Ehrmann, R.S. / White, E.B. / Maniaci, D.C. et al. | British Library Conference Proceedings | 2013


    Leading-Edge Roughness Effects on 63(3)-418 Airfoil Performance

    White, Edward / Kutz, Douglas / Freels, Justin et al. | AIAA | 2011