A fast but accurate computation is described for the aero-acoustic properties of a large cavity at subsonic flight speeds. This computation employs a detached-eddy simulation model in the free-shear layer at the cavity opening and the surrounding boundary layer, but assumes inviscid flow in the cavity and in the far field. The reduced gridding requirements in the cavity, in particular, lead to dramatic improvements in the time required for the computation. The results of these computations are validated against wind-tunnel data. This approach will permit significantly more flight test points to be evaluated computationally in support of the Stratospheric Observatory For Infrared Astronomy flight-test program being carried out at NASA s Dryden Flight Research Center.


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    Titel :

    Coupled RANS/LES for SOFIA Cavity Acoustic Prediction


    Beteiligte:

    Kongress:

    New Horizons Forum and Aerospace Exhibition ; 2010 ; Orlando, FL, United States
    48th AIAA Aerospace Science Meeting ; 2010 ; Orlando, FL, United States


    Erscheinungsdatum :

    2010-01-04


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :


    COUPLED RANS/LES FOR SOFIA CAVITY ACOUSTIC PREDICTION

    Woodruff, S. / American Institute of Aeronautics and Astronautics | British Library Conference Proceedings | 2010




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    Sheta, Essam F. / Harris, Robert E. / Luke, Edward A. et al. | AIAA | 2015


    Unsteady RANS-LES simulations of cavity flowfields

    Arunajatesan, S. / Sinha, N. | AIAA | 2001