On the trapped waves in acoustic waveguide with infinitely thin obstacle

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The paper shows the existence of the eigenwave captured by an infinitely thin obstacle in three-dimensional acoustic waveguide with rectangular cross-section corresponding to the eigenvalue which is embedded in the continuous spectrum. The cases of symmetric cruciform obstacle and a flat plate in the plane of symmetry are considered.

Acoustic waveguide, trapped modes, infinitely thin obstacle, discrete and continuous spectra, variational method

Короткий адрес: https://sciup.org/14835083

IDR: 14835083

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