Wave propagation in a waveguide containing restrictions with circular arc shape.

@article{Flix2015WavePI,
title={Wave propagation in a waveguide containing restrictions with circular arc shape.},
author={S. F{\'e}lix and A. Maurel and J. Mercier},
journal={The Journal of the Acoustical Society of America},
year={2015},
volume={137 3},
pages={
1274-81
}
}

A multimodal method is used to analyze the wave propagation in waveguides containing restrictions (or corrugations) with circular arc shapes. This is done using a geometrical transformation which transforms the waveguide with complex geometry in the real space to a straight waveguide in the transformed space, or virtual space. In this virtual space, the Helmholtz equation has a modified structure which encapsulates the complexity of the geometry. It is solved using an improved modal method… Expand