Coupled mode and finite element approximations of underwater sound propagation problems in general stratified environments

Athanassoulis, GA; Belibassakis, KA; Mitsoudis, DA; Kampanis, NA; Dougalis, VA

dc.contributor.author	Athanassoulis, GA	en
dc.contributor.author	Belibassakis, KA	en
dc.contributor.author	Mitsoudis, DA	en
dc.contributor.author	Kampanis, NA	en
dc.contributor.author	Dougalis, VA	en
dc.date.accessioned	2014-03-01T01:28:05Z
dc.date.available	2014-03-01T01:28:05Z
dc.date.issued	2008	en
dc.identifier.issn	0218396X	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/18705
dc.subject	Comparison of coupled mode and finite element codes	en
dc.subject	Range-dependent waveguides	en
dc.subject	Underwater acoustics	en
dc.title	Coupled mode and finite element approximations of underwater sound propagation problems in general stratified environments	en
heal.type	journalArticle	en
heal.identifier.primary	10.1142/S0218396X08003506	en
heal.identifier.secondary	http://dx.doi.org/10.1142/S0218396X08003506	en
heal.publicationDate	2008	en
heal.abstract	We compare the results of a coupled mode method with those of a finite element method and also of COUPLE on two test problems of sound propagation and scattering in cylindrically symmetric, underwater, multilayered acoustic waveguides with range-dependent interface topographies. We observe, in general, very good agreement between the results of the three codes. In some cases in which the frequency of the harmonic point source is such that an eigenvalue of the local vertical problem remains small in magnitude and changes sign several times in the vicinity of the interface nonhomogeneity, the discrepancies between the results of the three codes increase, but remain small in absolute terms. © 2008 IMACS.	en
heal.journalName	Journal of Computational Acoustics	en
dc.identifier.doi	10.1142/S0218396X08003506	en
dc.identifier.volume	16	en
dc.identifier.issue	1	en
dc.identifier.spage	83	en
dc.identifier.epage	116	en