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.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

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


    Additional title:

    CEAS Aeronaut J


    Contributors:

    Published in:

    CEAS Aeronautical Journal ; 12 , 1 ; 125-133


    Publication date :

    2021-01-01


    Size :

    9 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    WALL PRESSURE FLUCTUATIONS IN AN AXISYMMETRIC TURBULENT BOUNDARY LAYER UNDER STRONG ADVERSE PRESSURE GRADIENT

    Balantrapu, N. Agastya / Fritsch, Daniel J. / Millican, Anthony J. et al. | TIBKAT | 2020


    Wall Pressure Fluctuations in an Axisymmetric Turbulent Boundary Layer under Strong Adverse Pressure Gradient

    Balantrapu, N. Agastya / Fritsch, Daniel J. / Millican, Anthony J. et al. | AIAA | 2020


    Three-Dimensional Turbulent Boundary Layer With Adverse Pressure Gradient

    Driver, David M. / Hebbar, Sheshagiri K. | NTRS | 1992


    Wall-shear stress measurements in an adverse pressure gradient turbulent boundary layer

    Geurts, Koen J. / Nottebrock, Bernardo / Schroeder, Wolfgang | AIAA | 2014


    Adverse-pressure-gradient thermal structure for constant wall temperature turbulent boundary layer

    Bagheri, Nader / White, Bruce / Lin, Way-ping et al. | AIAA | 1995