Deconvolution of the wave number - frequency spectra of wall pressure fluctuations - Centrale Lyon - périmètre strict
Conference Papers Year : 2018

Deconvolution of the wave number - frequency spectra of wall pressure fluctuations

Abstract

The wavenumber - frequency spectra of a pressure field beneath a turbulent boundary layer is considered, with the aim of removing the effect of the measuring device. A rotating antenna of aligned microphones has been used in previous studies and the measured spectra are shown to be a convolution of the true spectra with the transfer function of said antenna. Deconvolution algorithms are presented that were previously developed for other fields of studies. Test cases and processing of experimental data show that until a better convergence criteria is defined for the iterative process, a hybrid approach between deconvolution and angular interpolation of the antenna’s rotation could be the best compromise.
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hal-02377827 , version 1 (12-11-2024)

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Simon Prigent, Rafael Engelman, Edouard Salze, Christophe Bailly. Deconvolution of the wave number - frequency spectra of wall pressure fluctuations. 2018 AIAA/CEAS Aeroacoustics Conference, 2018, Atlanta, United States. ⟨10.2514/6.2018-3291⟩. ⟨hal-02377827⟩
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