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dc.contributor.authorCampos-Pozuelo, Cleofé-
dc.contributor.authorVanhille, Christian-
dc.contributor.authorDubus, Bertrand-
dc.identifier.citation17th International Congress on Acoustics, Signal-Computational-Numerical, Numerical methods in acoustics, 5B.04.01en_US
dc.descriptionCommunication presented at the 17th International Congress on Acoustics, Rome, 2-7 September 2001.en_US
dc.description.abstractSome recent developments in numerical nonlinear acoustics are presented. First a three dimensional perturbation approach based on the finite-element method is described. This procedure can predict the propagation of acoustic fields produced by sources of arbitrary geometry as well as the pressure distribution inside a three dimensional cavity including boundary layer absorption. Its main limitation is due to its range of validity limited to waves of finite but moderate amplitude. We then describe a second approach: a numerical model for nonlinear waves and weak shocks in thermoviscous fluids based in a time-domain finite-difference algorithm. This algorithm does not present any practical limitations about the amplitude of the wave but it is referred to one-dimensional problems. Some future trends are also commented.en_US
dc.format.extent200512 bytes-
dc.publisherAcoustical Society of Italyen_US
dc.subjectNonlinear Acousticsen_US
dc.subjectNumerical approximationsen_US
dc.subjectAcoustic field propagationen_US
dc.subjectFinite-difference algorithmen_US
dc.subjectThermoviscous fluidsen_US
dc.titleNumerical Modelling of some Problems in Nonlinear Acousticsen_US
dc.typecomunicación de congresoen_US
dc.description.peerreviewedPeer revieweden_US
Appears in Collections:(IA) Comunicaciones congresos
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