Results from an Euler and a Full Potential Solver are compared for a nonlifting transonic hovering rotor. The correlation is very good on the blade, but the aerodynamic disturbances are damped by the Full Potential Code off the blade tip. The ability of both codes to provide near-field input data for acoustic predictions using Lighthill's Acoustic Analogy is checked. Acoustic results using Euler input data show a fairly good correlation with experiment and with direct Euler far-field calculations, even in the case of delocalization. On the contrary, the precision of the Full Potential results is insufficient for that purpose, and further work is needed to improve the code's stability and accuracy off the blade.


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    Titel :

    Aerdodynamic and acoustic calculations of transsonic nonlifting hovering rotors


    Weitere Titelangaben:

    Aerodynamische und akustische Berechnungen von transsonischen auftriebsfreien Rotoren im Schwebeflugzustand


    Beteiligte:
    Prieur, J. (Autor:in) / Costes, M. (Autor:in) / Baeder, J.D. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    1996


    Format / Umfang :

    10 Seiten, 21 Bilder, 17 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch





    Transsonic flows and numerical analysis

    Moretti, G. | Tema Archiv | 1974


    Vortex theory for hovering rotors

    MILLER, R. H. | AIAA | 1982


    Trailing-Edge Noise from Hovering Rotors

    Y. N. Kim / A. R. George | AIAA | 1982