Modeling the nonlinear aeroacoustic response of a harmonically forced side branch aperture under turbulent grazing flow
Tiemo Pedergnana,
Claire Bourquard,
Abel Faure-Beaulieu
et al.
Abstract:Hydrodynamic modes in the turbulent mixing layer over a cavity can constructively interact with the acoustic modes of that cavity and lead to aeroacoustic instabilities. The resulting limit cycles can cause undesired structural vibrations or noise pollution in many industrial applications.To further the predictive understanding of this phenomenon, we propose two physics-based models which describe the nonlinear aeroacoustic response of a side branch aperture under harmonic forcing with variable acoustic pressu… Show more
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