Summary
In this paper, we analyze the approximation of acoustic waves in a two layered media by a finite diffrences variational scheme. We examine in particular the approximation of the guided waves. We point out the existence of purely numerical parasitic phenomena and quantify the numerical dispersion relative to guided waves.
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Guillot, J.C., Joly, P. Approximation by finite differences of the propagation of acoustic waves in stratified media. Numer. Math. 54, 655–702 (1989). https://doi.org/10.1007/BF01396488
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DOI: https://doi.org/10.1007/BF01396488