Homogenized Perforated Interface in Acoustic Wave Propagation - Modeling and Optimization

Result code in 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>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Homogenized Perforated Interface in Acoustic Wave Propagation - Modeling and Optimization
Original language description
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
Czech name
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Czech description
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Project
<a href="/en/project/GA101%2F07%2F1471" target="_blank" >GA101/07/1471: Finite element modelling of linear, non-linear and multiscale effects in wave propagation in solids and heterogeneous media</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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