Optimized compact wideband reactive silencers with annular resonators
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F20%3A00342096" target="_blank" >RIV/68407700:21230/20:00342096 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.jsv.2020.115497" target="_blank" >https://doi.org/10.1016/j.jsv.2020.115497</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jsv.2020.115497" target="_blank" >10.1016/j.jsv.2020.115497</a>
Alternative languages
Result language
angličtina
Original language name
Optimized compact wideband reactive silencers with annular resonators
Original language description
This paper presents a theoretical examination of wave propagation in a cylindrical duct loaded with an array of closely spaced flush-mounted annular resonators forming a simple reactive silencer. A semi-analytical mathematical model is proposed considering higher evanescent modes in the duct and plane-wave- and first transverse mode in annular resonators. Viscothermal losses in annular resonators are considered by employing the equivalent-fluid model. A heuristic optimization algorithm based on the proposed mathematical model is used to maximize the minimum transmission loss in a given frequency range. The numerical results show that multiple resonances of the individual resonators can be effectively utilized to design compact (thin) silencers with a wide frequency range and a relatively small number of resonators. The numerical results are validated by comparison with finite element simulations.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10307 - Acoustics
Result continuities
Project
<a href="/en/project/GA18-24954S" target="_blank" >GA18-24954S: Propagation of acoustic waves through phononic materials and structures</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Sound and Vibration
ISSN
0022-460X
e-ISSN
1095-8568
Volume of the periodical
484
Issue of the periodical within the volume
October
Country of publishing house
GB - UNITED KINGDOM
Number of pages
16
Pages from-to
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UT code for WoS article
000561599900001
EID of the result in the Scopus database
2-s2.0-85086823825