Acoustic waves in homogenized fluid-saturated deforming periodic scaffolds under permanent flow

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F20%3A43960232" target="_blank" >RIV/49777513:23520/20:43960232 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.easdprocedia.org/conferences/easd-conferences/eurodyn-2020/9044" target="_blank" >https://www.easdprocedia.org/conferences/easd-conferences/eurodyn-2020/9044</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.47964/1120.9044.19404" target="_blank" >10.47964/1120.9044.19404</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Acoustic waves in homogenized fluid-saturated deforming periodic scaffolds under permanent flow

Popis výsledku v původním jazyce

Acoustic waves in a poroelastic medium with periodic structure are studied with respect to permanent seepage flow which modifies the wave propagation. The homogenization method provides the macroscopic equations governing the dynamic response of an effective medium. whose the properties are determined by the characteristic responses. We consider a Newtonian slightly compressible fluid under the barotropic acoustic approximation. In contrast with usual simplifications, the advection phenomenon of the Navier-Stokes equations is accounted for. The homogenization results are based on the periodic unfolding method combined with the asymptotic expansion technique. The dynamic permeability depends on the fluid flow properties including the advection effects associated with an assumed stationary perfusion of the porous structure. Numerical results show influence of the advection velocity on the strong dispersion of the quasi-shear modes

Název v anglickém jazyce

Acoustic waves in homogenized fluid-saturated deforming periodic scaffolds under permanent flow

Popis výsledku anglicky

Acoustic waves in a poroelastic medium with periodic structure are studied with respect to permanent seepage flow which modifies the wave propagation. The homogenization method provides the macroscopic equations governing the dynamic response of an effective medium. whose the properties are determined by the characteristic responses. We consider a Newtonian slightly compressible fluid under the barotropic acoustic approximation. In contrast with usual simplifications, the advection phenomenon of the Navier-Stokes equations is accounted for. The homogenization results are based on the periodic unfolding method combined with the asymptotic expansion technique. The dynamic permeability depends on the fluid flow properties including the advection effects associated with an assumed stationary perfusion of the porous structure. Numerical results show influence of the advection velocity on the strong dispersion of the quasi-shear modes

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20302 - Applied mechanics

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings of the International Conference on Structural Dynamic , EURODYN

ISBN

978-618-85072-0-3

ISSN

2311-9020

e-ISSN

—

Počet stran výsledku

16

Strana od-do

562-577

Název nakladatele

European Association for Structural Dynamics

Místo vydání

Athens

Místo konání akce

Řecko

Datum konání akce

23. 11. 2020

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—