Homogenized Perforated Interface in Acoustic Wave Propagation - Modeling and Optimization

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F11%3A43899278" target="_blank" >RIV/49777513:23520/11:43899278 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Homogenized Perforated Interface in Acoustic Wave Propagation - Modeling and Optimization

Popis výsledku v původním jazyce

We consider acoustic wave propagation described by Helmholtz equation and involving homogenized transmission conditions imposed along a thin interface, separating two halfspaces occupied by the acoustic medium. On this interface the homogenized transmission conditions are imposed; they were obtained by the two-scale homogenization of a layer with an immersed sieve-like obstacle designed as a periodic structure. In many engineering applications, optimization of the interface design is of interest. We developed the sensitivity of the homogenized coefficients involved in the transmission conditions with respect to the design of the "holes" in the layer. The acoustic waves propagating in a duct which is equipped with the perforated interface are considered. Using 2D and 3D examples we illustrate, how the perforation geometry in?uences the acoustic transmission. The optimization problem is solved with a few parameters describing the shape of perforations. We demonstrate how the multiscale a

Název v anglickém jazyce

Homogenized Perforated Interface in Acoustic Wave Propagation - Modeling and Optimization

Popis výsledku anglicky

We consider acoustic wave propagation described by Helmholtz equation and involving homogenized transmission conditions imposed along a thin interface, separating two halfspaces occupied by the acoustic medium. On this interface the homogenized transmission conditions are imposed; they were obtained by the two-scale homogenization of a layer with an immersed sieve-like obstacle designed as a periodic structure. In many engineering applications, optimization of the interface design is of interest. We developed the sensitivity of the homogenized coefficients involved in the transmission conditions with respect to the design of the "holes" in the layer. The acoustic waves propagating in a duct which is equipped with the perforated interface are considered. Using 2D and 3D examples we illustrate, how the perforation geometry in?uences the acoustic transmission. The optimization problem is solved with a few parameters describing the shape of perforations. We demonstrate how the multiscale a

Druh

D - Stať ve sborníku

CEP obor

BI - Akustika a kmity

OECD FORD obor

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Projekt

<a href="/cs/project/GA101%2F07%2F1471" target="_blank" >GA101/07/1471: Modelování šíření vln v tělesech a heterogenních prostředí s uvažováním lineárních, nelinárních a víceškálových jevů metodou konečných prvků</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název statě ve sborníku

Vibration Problems ICOVP 2011

ISBN

978-94-007-2068-8

ISSN

0930-8989

e-ISSN

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Počet stran výsledku

7

Strana od-do

321-327

Název nakladatele

Springer

Místo vydání

Heidelberg

Místo konání akce

Praha

Datum konání akce

5. 9. 2011

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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