On approaches, methods and problems related to wave dispersion in porous media
| dc.contributor.author | Rohan, E. | |
| dc.contributor.author | Nguyen, V.-H. | |
| dc.contributor.author | Lukeš, V. | |
| dc.contributor.author | Cimrman, R. | |
| dc.contributor.author | Naili, S. | |
| dc.contributor.editor | Adámek, Vítězslav | |
| dc.contributor.editor | Jonášová, Alena | |
| dc.contributor.editor | Plánička, Stanislav | |
| dc.contributor.editor | Zajíček, Martin | |
| dc.date.accessioned | 2019-01-17T12:40:05Z | |
| dc.date.available | 2019-01-17T12:40:05Z | |
| dc.date.issued | 2018 | |
| dc.description.abstract-translated | The paper is devoted to modelling of wave propagation in fluid saturated porous media. The aim is to compare two approaches suitable for wave analysis in periodic structures. The homogenization-based method provides macroscopic models and relies on scale separation, such that the wave length should be much longer than the heterogeneity size. The method based on the Bloch-Floquet theory is applicable for analyzing plane wave propagation in infinite continua only, but enables to capture also effects of Bragg?s scattering. Application of these two methods for computing the dispersion curves of the two-phase media with deformable and rigid skeletons is discussed in the context of two kinds of porous media: 1) deformable fluid-saturated porous media described by the Biot model at the mesoscopic scale, 2) waves in fluids saturating rigid porous structures. Computational studies based on the Bloch wave decomposition were performed for numerical models obtained using the finite element discretization of the corresponding problems imposed in the representative volume element. The results presented in terms of dispersion curves are compared with analogous results obtained using the homogenized models providing directly the shear and pressure wave responses. | en |
| dc.description.sponsorship | This research is supported by project GACR 17-01618S and in part by the project LO1506 of the Czech Ministry of Education, Youth and Sports. | en |
| dc.format | 2 s. | cs |
| dc.format.mimetype | application/pdf | |
| dc.identifier.citation | Computational mechanics 2018: book of extended abstracts: 34th conference with international participation, p. 91-92. | en |
| dc.identifier.isbn | 978-80-261-0819-1 | |
| dc.identifier.uri | http://hdl.handle.net/11025/30823 | |
| dc.language.iso | en | en |
| dc.publisher | Západočeská univerzita v Plzni | cs |
| dc.relation.ispartofseries | Computational Mechanics | en |
| dc.rights | Copyright © 2018 University of West Bohemia, Plzeň, Czech Republic | en |
| dc.rights.access | openAccess | en |
| dc.subject | výpočetní modelování | cs |
| dc.subject | měření vln | cs |
| dc.subject | tekutinou nasycené porézní pevné látky | cs |
| dc.subject | vlnová analýza | cs |
| dc.subject.translated | computational modelling | en |
| dc.subject.translated | waves propagation | en |
| dc.subject.translated | fluid-saturated porous solid | en |
| dc.subject.translated | wave analysis | en |
| dc.title | On approaches, methods and problems related to wave dispersion in porous media | en |
| dc.type | konferenční příspěvek | cs |
| dc.type | conferenceObject | en |
| dc.type.status | Peer-reviewed | en |
| dc.type.version | publishedVersion | en |
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