A model of the spectrum of wall-pressure fluctuations under a turbulent boundary layer based on an analytical solution of the Poisson equation is presented. This model is suited for aeroacoustic prediction based on CFD-extracted flow information but requires statistical properties of the boundary-layer turbulence that are not resolved in steady-state simulations and need to be modelled. For this reason, this paper uses Lattice-Boltzmann (DNS-LBM) and Navier-Stokes Direct Numerical Simulations (DNS-NS) of an airfoil in a wind-tunnel jet to investigate the link between turbulence and wall-pressure statistics and validate the assumptions made in the application of the analytical model. The use of input from two numerical simulation methods allows generalizing the results of the analytical model.


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    Titel :

    CFD-based prediction of wall-pressure spectra under a turbulent boundary layer with adverse pressure gradient


    Weitere Titelangaben:

    CEAS Aeronaut J


    Beteiligte:
    Grasso, Gabriele (Autor:in) / Wu, Hao (Autor:in) / Orestano, Susanna (Autor:in) / Sanjosé, Marlène (Autor:in) / Moreau, Stéphane (Autor:in) / Roger, Michel (Autor:in)

    Erschienen in:

    CEAS Aeronautical Journal ; 12 , 1 ; 125-133


    Erscheinungsdatum :

    2021-01-01


    Format / Umfang :

    9 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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