Homogenization of transmission conditions for analysis of acoustic waves in domains with perforated barriers

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F09%3A00501727" target="_blank" >RIV/49777513:23520/09:00501727 - 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

Homogenization of transmission conditions for analysis of acoustic waves in domains with perforated barriers

Original language description

We consider structures like the mufer of the engine exhaust, where the acoustic waves propagate through periodically perforated barriers. Recently we proposed a homogenized model of the acoustic transmission through the layer with embedded rigid obstacles of arbitrary shapes, which represent the perforation. The homogenized model describes relationship between jump of the acoustic pressures at the discontinuity interface and the transverse acoustic velocity, on introducing an in-layer acoustic pressurewhich describes wave propagation along the interface. The coupling between the transversely and the tangential acoustic velocities may become important for certain types of perforations. A sensitivity study was done which reveals remarkable dependence ofwave transmission losses on the geometry of the perforation. Examples of 3D perforation geometries were treated.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BI - Acoustics and oscillation

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

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

Publication year

2009

Confidentiality

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

Name of the periodical

PAMM - Proceedings in Applied Mathematics and Mechanics

ISSN

1617-7061

e-ISSN

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Volume of the periodical

8

Issue of the periodical within the volume

1

Country of publishing house

US - UNITED STATES

Number of pages

2

Pages from-to

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UT code for WoS article

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EID of the result in the Scopus database

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