Several ideas for the reduction of transonic blade-vortex interaction (BVI) noise are proposed and tested. Noise due to transonic BVI is analyzed using a finite difference code; the numerically calculated 2D near-field aerodynamic results are extended to 3D linear acoustic far field using the Kirchhoff method. It is shown that the noise can be significantly reduced by splitting the vortex in two. BVI noise is also substantially reduced by reducing the vortex strength and by increasing the angle of attack.


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    Title :

    Transonic blade-vortex interactions - Noise reduction


    Contributors:
    Xue, Y. (author) / Lyrintzis, A. S. (author)

    Published in:

    Publication date :

    1993-06-01



    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English


    Keywords :



    Transonic Blade-Vortex Interactions: Noise Reduction

    Y. Xue / A. S. Lyrintzis | AIAA | 1993


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    Lyrintzis, A.S. / George, A.R. | Tema Archive | 1989


    Study of noise mechanisms of transonic blade-vortex interactions

    Lyrintzis, A.S. / Xue, Y. | Tema Archive | 1991


    Acoustics of transonic blade-vortex interactions

    GEORGE, A. R. / LYRINTZIS, A. S. | AIAA | 1988