Abstract
Using previous results [Vinogradova, J. Acoust. Soc. Am. 144(3), 1146–1153 (2018)] on the spectrum of complex eigenvalues for an open elliptic cavity with variably placed longitudinal slits, the author investigates the resonance excitation of such a cavity by obliquely incident plane waves. The complete investigation of the resonance response is based on accurate calculation of the monostatic and bi-static sonar cross-sections, as well as calculation of the jump in normal velocity at the cavity surface. High-accuracy calculations are obtained by employing the rigorous Method of Analytical Regularization. Furthermore, studies of semi-elliptic cavities with high eccentricities, modelling the extremely deep acoustical cavities, are also performed.
Original language | English |
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Pages (from-to) | 3294-3305 |
Number of pages | 12 |
Journal | The Journal of the Acoustical Society of America |
Volume | 147 |
Issue number | 5 |
Early online date | 7 May 2020 |
DOIs | |
Publication status | Published - May 2020 |
Keywords
- Method of Analytical Regularisation
- resonance scattering
- slotted elliptic cavity