Wall-pressure spectra models for supersonic and hypersonic turbulent boundary layers

K. Ritos, D. Drikakis, I. W. Kokkinakis

    Research output: Contribution to journalArticlepeer-review


    This paper presents an investigation of pressure fluctuations spectra beneath supersonic and hypersonic turbulent boundary layers at zero pressure gradient. High-order implicit Large Eddy Simulations have been used to provide numerical data for assessing existing models and further improving their qualitative accuracy in predicting wall-pressure spectra. Several different models have been investigated and it is shown that existing models fail to capture the correct behaviour of pressure fluctuations in supersonic and hypersonic boundary layers across a broad range of frequencies. The models have been modified by introducing compressibility corrections. The modified models are validated against implicit Large Eddy Simulations, Direct Numerical Simulations, and experimental data. The qualitative accuracy of the models is discussed and the most promising model is identified.

    Original languageEnglish
    Pages (from-to)90-108
    Number of pages19
    JournalJournal of Sound and Vibration
    Publication statusPublished - 17 Mar 2019


    • Acoustic loading
    • Compressible
    • Hypersonic
    • Spectra models
    • Supersonic


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