Lattice Boltzmann (LB) and compressible Navier-Stokes (NS) equations based computational fluid dynamics (CFD) approaches are compared for simulating airframe noise. Both LB and NS CFD approaches are implemented within the Launch Ascent and Vehicle Aerodynamics (LAVA) framework. Both schemes utilize the same underlying Cartesian structured mesh paradigm with provision for local adaptive grid refinement and sub-cycling in time. We choose a prototypical massively separated, wake-dominated flow ideally suited for Cartesian-grid based approaches in this study - The partially-dressed, cavity-closed nose landing gear (PDCC-NLG) noise problem from AIAA's Benchmark problems for Airframe Noise Computations (BANC) series of workshops. The relative accuracy and computational efficiency of the two approaches are systematically compared. Detailed comments are made on the potential held by LB to significantly reduce time-to-solution for a desired level of accuracy within the context of modeling airframes noise from first principles.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Lattice Boltzmann and Navier-Stokes Cartesian CFD Approaches for Airframe Noise Predictions


    Beteiligte:

    Kongress:

    AIAA Aviation Forum ; 2017 ; Denver, CO, United States
    AIAA Computational Fluid Dynamics Conference ; 2017 ; Denver, CO, United States


    Erscheinungsdatum :

    05.06.2017


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Keine Angabe


    Sprache :

    Englisch




    Lattice Boltzmann and Navier-Stokes Cartesian CFD Approaches for Airframe Noise Predictions

    Barad, Michael / Kocheemoolayil, Joseph / Kiris, Cetin | NTRS | 2017


    Lattice Boltzmann and Navier-Stokes Cartesian CFD Approaches for Airframe Noise Predictions

    Barad, Michael F. / Kocheemoolayil, Joseph G. / Kiris, Cetin C. | AIAA | 2017


    LATTICE BOLTZMANN AND NAVIER-STOKES CARTESIAN CFD APPROACHES FOR AIRFRAME NOISE PREDICTIONS (AIAA 2017-4404)

    Barad, Michael F. / Kocheemoolayil, Joseph G. / Kiris, Cetin C. | British Library Conference Proceedings | 2017


    Lattice Boltzmann for Airframe Noise Predictions

    Barad, Michael / Kocheemoolayil, Joseph / Kiris, Cetin | NTRS | 2017