The effect of vortex distortion onthe flow arising from the interaction of a convecting vortex and an airfoil is analyzed for two-dimensional, incompressible, inviscid flow. Significant distortion of the vortex structure, owing to interaction with the airfoil, can occur, especially during close interactions. The vorticity field is represented by multiple vortices. Vortex instability and diffusion, resulting from discretization in space and time, are discussed. An integral boundary element method is used to represent the airfoil surface. The body panels are re-distributed on the surface as the vortices are convected past to calculate the effect of the vorticity field more accurately. The method is applied to several cases to examine effects of vortex strength, distribution, initial separation position, and airfoil angle of attack. Calculations of vortex trajectory and distortion, and airfoil surface-pressure distribution, lift, drag, and circulation as function of time are presented.


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    Title :

    Distortion of the vortex core during blade-vortex interaction


    Additional title:

    Verformung des Wirbelkerns bei der Wechselwirkung zwischen Tragfluegel und Wirbel


    Contributors:
    Lee, D.J. (author) / Smith, C.A. (author)

    Published in:

    AIAA-Papers ; Jun ; 1-17


    Publication date :

    1987


    Size :

    17 Seiten, 17 Bilder, 21 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English







    Effect of vortex core distortion on blade-vortex interaction

    Lee, D.J. / Smith, C.A. | Tema Archive | 1991


    Examination of vortex deformation during blade-vortex interaction

    Horner, M.B. / Galbraith, R.A.McD. / Coton, F.N. et al. | Tema Archive | 1996