Computational simulations using structured curvilinear overset grids with the Launch Ascent and Vehicle Aerodynamics (LAVA) framework are presented for predicting the aerodynamic and aeroacoustic behavior of a contra-rotating open rotor (CROR) propulsion system using a newly developed and computationally efficient sliding mesh technique. A comprehensive evaluation of two turbulence closure treatments is carried out as part of the scope of this work: Unsteady Reynolds-Averaged Navier-Stokes Simulation (URANS), and Hybrid RANS/LES (HRLES). The computed results are then validated against existing experimental measurements at both the nominal take-off and cruise flight conditions. To propagate the noise generated by the near-field CROR system, aeroacoustic analysis based on a frequency-domain permeable surface Ffowcs Williams-Hawkings (FW-H) approach is applied.


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    Title :

    Unsteady RANS and Scale Resolving Simulations of Open Rotor Noise


    Contributors:

    Conference:

    AIAA SciTech Forum and Exposition ; 2023 ; National Harbor, MD, US



    Publication date :

    2023-01-19



    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English




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