Proceedings of the 10th Convention of the European Acoustics Association Forum Acusticum 2023 2024
DOI: 10.61782/fa.2023.0034
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Acoustics of a double Helmholtz resonators with flow

Y. Aurégan

Abstract: The acoustic behavior of a double annular resonator is studied. Compared to the associated single resonator, the double resonator shows a transmission peak near the resonance frequency where the transmission is minimal when the losses are zero. This peak is associated with an evanescent coupling between the two resonators and is called "Autler-Townes splitting". During the measurement of the device, this peak is very strongly attenuated by viscous effects, so much so that it almost disappears. When a flow is a… Show more

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