Computational results for a full-scale simulation of a Gulfstream G-III aircraft are presented. In support of a NASA airframe noise flight test campaign, Exa Corporation’s lattice Boltzmann PowerFLOW® solver was used to perform time-accurate simulations of the flow around a highly detailed, full-scale aircraft model. Free-air boundary conditions were used at a Mach number of 0.23 and a Reynolds number of 10.5 × 10(exp 6) based on mean aerodynamic chord. This paper documents the simulation campaign for the baseline aircraft configuration at several flight conditions, including multiple flap deflections and main landing gear deployed or retracted. The high-fidelity, synthetic data were post-processed using a Ffowcs-Williams and Hawkings integral approach to estimate farfield acoustic behavior, with pressures on the model solid surface or a permeable surface enveloping the acoustic near field used as input. The numerical approach, simulation attributes, and the effects of grid resolution, gear deployment, and multiple flap deflections, are discussed as well.


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    Titel :

    Airframe Noise Simulations of a Full-Scale Aircraft


    Beteiligte:
    Appelbaum, Jason (Autor:in) / Duda, Benjamin (Autor:in) / Fares, Ehab (Autor:in) / Khorrami, Mehdi R. (Autor:in)

    Kongress:

    AIAA/CEAS Aeroacoustics Conference 2018 ; 2018 ; Atlanta, GA, United States


    Erscheinungsdatum :

    25.06.2018


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :


    Airframe Noise Simulations of a Full-Scale Aircraft

    Appelbaum, Jason / Duda, Benjamin M. / Fares, Ehab et al. | AIAA | 2018


    Airframe Noise Simulations of a Full-Scale Aircraft (AIAA 2018-2973)

    Appelbaum, Jason / Duda, Benjamin M. / Fares, Ehab et al. | British Library Conference Proceedings | 2018



    Towards Full Aircraft Airframe Noise Prediction: Lattice Boltzmann Simulations

    Khorrami, Mehdi R. / Fares, Ehab / Casalino, Damiano | AIAA | 2014


    Towards Full Aircraft Airframe Noise Prediction: Detached Eddy Simulations

    Khorrami, Mehdi R. / Mineck, Raymond E. | AIAA | 2014