Homogenization of acoustic waves in strongly heterogenous porous structures
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F13%3A43918775" target="_blank" >RIV/49777513:23520/13:43918775 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Homogenization of acoustic waves in strongly heterogenous porous structures
Original language description
We consider acoustic waves in fluid-saturated periodic media with dual porosity. At the mesoscopic level, the fluid motion is governed by the Darcy flow model extended by inertia terms and by the mass conservation equation. In this study, assuming the porous skeleton is rigid, the aim is to distinguish the effects of the strong heterogeneity in the permeability coefficients. Using the asymptotic homogenization method we derive macroscopis equations and obtain the dispersion relationship for harmonic waves. The double porosity gives rise to an extra homogenized coefficient of dynamic compressibility which is not obtained in the upscaled single porosity model. Both the single and double porosity models are compared using an example illustrating wave propagation in layered media.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JI - Composite materials
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GAP101%2F12%2F2315" target="_blank" >GAP101/12/2315: Modelling of acoustic wave propagation in strongly heterogeneous media; multi-scale numerical and analytical approaches</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
WAVE MOTION
ISSN
0165-2125
e-ISSN
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Volume of the periodical
50
Issue of the periodical within the volume
7
Country of publishing house
US - UNITED STATES
Number of pages
16
Pages from-to
1074-1089
UT code for WoS article
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EID of the result in the Scopus database
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