Computations and analysis for a two-dimensional flexible membrane wing airfoil are presented. A well-validated, robust, sixth-order Navier-Stokes solver is employed coupled with a membrane structural model suitable for the highly nonlinear structural response of the membrane. A low Reynolds number, Re = 2500, consistent with MAV flight is chosen for the majority of the calculations. The most notable effect of the membrane flexibility is the introduction of a mean camber to the membrane airfoil. A close coupling between unsteady vortex shedding and the dynamic structural response is demonstrated. The dynamic motion of the membrane surface is also shown to significantly alter the unsteady flow over the membrane airfoil at high angles of attack. The coupling of this dynamic effect and the mean camber results in a delay in stall with enhanced lift for higher angles of attack. Exploratory computations investigating the effects of angle of attack, membrane rigidity, membrane pretension and Reynolds number on the membrane airfoil response are also presented.


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    Titel :

    High fidelity computational simulation of a membrane wing airfoil


    Weitere Titelangaben:

    Hochgenaue numerische Simulation eines Membranflügel-Strömungsprofils


    Beteiligte:
    Gordnier, R.E. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2009


    Format / Umfang :

    21 Seiten, 24 Bilder, 2 Tabellen, 29 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch





    High Fidelity Computational Simulation of a Membrane Wing Airfoil

    Gordnier, R. / American Institute of Aeronautics and Astronautics | British Library Conference Proceedings | 2008



    High Fidelity Computational Aeroelastic Analysis of a Plunging Membrane Airfoil

    Attar, P. / Gordnier, R. | British Library Conference Proceedings | 2009


    High Fidelity Aeroelastic Simulation of a Membrane Airfoil Undergoing Figure-of-Eight Kinematics

    Gee, M. / Attar, P. / American Institute of Aeronautics and Astronautics | British Library Conference Proceedings | 2011