The Dipole Resonator and Dipole Waveguide Insulator in Dense Liquid Medium

In this paper, the propagation of sound in an acoustically narrow waveguide, the wall of which is lined with identical dipole resonators and masses on springs, is theoretically considered. It is shown that, in the frequency range above the resonant frequency of the resonators, sound waves exponentia...

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Bibliographic Details
Published in:Acoustics (Basel, Switzerland) Switzerland), 2022-06, Vol.4 (2), p.469-478
Main Author: Mironov, Mikhail
Format: Article
Language:English
Subjects:
Acoustics
dipole
Dipoles
Experiments
Frequency ranges
Homogenization
Locking
Propagation
Resonant frequencies
resonator
Resonators
sound locking
Sound propagation
Sound waves
Springs (elastic)
Wave propagation
waveguide
Waveguides
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Summary:In this paper, the propagation of sound in an acoustically narrow waveguide, the wall of which is lined with identical dipole resonators and masses on springs, is theoretically considered. It is shown that, in the frequency range above the resonant frequency of the resonators, sound waves exponentially attenuate, and the waveguide is locked. The width of this range depends on two parameters—the ratio of the cross-sectional areas of the resonators and the waveguide and the ratio of the mass of the resonator to the mass of the medium displaced by it. As the resonator mass decreases, the locking band width expands and may become infinite.
ISSN:2624-599X
2624-599X
DOI:10.3390/acoustics4020029