Multiscale simulation of acoustic waves in homogenized heterogeneous porous media with low and high permeability contrasts

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F16%3A43929391" target="_blank" >RIV/49777513:23520/16:43929391 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.ijengsci.2015.12.004" target="_blank" >http://dx.doi.org/10.1016/j.ijengsci.2015.12.004</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.ijengsci.2015.12.004" target="_blank" >10.1016/j.ijengsci.2015.12.004</a>

Result language
angličtina
Original language name
Multiscale simulation of acoustic waves in homogenized heterogeneous porous media with low and high permeability contrasts
Original language description
Acoustic behavior of fluid saturated, heterogeneous, rigid porous media which consist of two micro-porous materials with high permeability contrast is studied using a two-scale model based on the homogenization theory. At the mesoscopic level, the fluid motion is governed by the generalized Darcy flow model. At the macroscopic scale, effective acoustic properties are described by a model which has recently been derived using the periodic unfolding method (Rohan, 2013).This paper presents a computational procedure for estimating the pressure and the velocity fields at both the mesoscale and the macroscale. The model is validated by comparing the multiscale solutions with those of the model with exact periodic mesostructural geometry. The numerical solutions are computed via the finite element method. The ranges of applicability of homogenized models with "high contrast" and "low contrast" permeabilities are also investigated.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JJ - Other materials
OECD FORD branch
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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)

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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