The present paper presents the application of a technique to estimate velocity spectra on the complex supersonic flowfield of a shock-wave/turbulent boundary-layer interaction. A combined numerical–experimental approach relying on dual particle image velocimetry measurements and large-eddy simulations is used to optimize and validate a method allowing the reconstruction of spectral quantities from cross-correlations sampled at an arbitrary low sampling frequency from a Taylor-like hypothesis. The method, previously applied to a slowly streamwise developing boundary-layer flow, is refined so as to be able to better cope with flows having a higher degree of inhomogeneity. The accuracy and robustness of the resulting spectral estimates are evaluated in various characteristic regions distributed over the whole shock-wave/turbulent boundary-layer interaction flowfield thanks to the long-time large-eddy simulation database. Metrics allowing an a priori evaluation of the accuracy are also derived. Velocity spectra are then obtained from the experiments for the same locations. Comparisons with their large-eddy simulation counterparts make it possible to gain some insights into the origin of differences found between the experiments and the numerical simulation.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Velocity Spectrum Estimation in Shock-Wave/Turbulent Boundary-Layer Interaction



    Erschienen in:

    Erscheinungsdatum :

    2017




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch


    Schlagwörter :

    Klassifikation :

    BKL:    55.50 Luftfahrzeugtechnik / 55.60 Raumfahrttechnik / 55.60 / 50.93 / 55.50 / 50.93 Weltraumforschung
    Lokalklassifikation TIB:    770/7040



    Velocity Spectrum Estimation in Shock-Wave/Turbulent Boundary-Layer Interaction

    Jiang, Tetyana / Schreyer, Anne-Marie / Larchevêque, Lionel et al. | AIAA | 2017


    Velocity Spectrum Estimation in Shock-Boundary Layer Interaction

    Jiang, Tetyana / Schreyer, Anne-Marie / Larchevêque, Lionel et al. | AIAA | 2016


    Velocity Spectrum Estimation in Shock-Boundary Layer Interaction (AIAA 2016-0030)

    Jiang, Tetyana / Schreyer, Anne-Marie / Larchevêque, Lionel et al. | British Library Conference Proceedings | 2016