Abstract
The effect of blockage on the acoustic propagation in finite cylindrical cavities is studied. The shift in acoustic resonances corresponding to longitudinal and transverse standing waves is determined from a simplified one-dimensional plane-wave theory and compared to a more precise three-dimensional analysis based on a Green’s function surface element method adopted to axisymmetric geometries. One-dimensional theory is qualitatively acceptable even for large blockage while details of the acoustic field are revealed only by the three-dimensional analysis.
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