Optimized compact wideband reactive silencers with annular resonators

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Optimized compact wideband reactive silencers with annular resonators

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Optimized compact wideband reactive silencers with annular resonators

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10307 - Acoustics

Projekt

<a href="/cs/project/GA18-24954S" target="_blank" >GA18-24954S: Šíření akustických vln fononickými materiály a strukturami</a><br>

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 periodika

Journal of Sound and Vibration

ISSN

0022-460X

e-ISSN

1095-8568

Svazek periodika

484

Číslo periodika v rámci svazku

October

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

16

Strana od-do

—

Kód UT WoS článku

000561599900001

EID výsledku v databázi Scopus

2-s2.0-85086823825