Novel design for acoustic silencers for ducts with flow based on the bound states in the continuum

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F23%3A00369182" target="_blank" >RIV/68407700:21230/23:00369182 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1007/s00419-023-02508-y" target="_blank" >https://doi.org/10.1007/s00419-023-02508-y</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00419-023-02508-y" target="_blank" >10.1007/s00419-023-02508-y</a>

Jazyk výsledku

čeština

Název v původním jazyce

Novel design for acoustic silencers for ducts with flow based on the bound states in the continuum

Popis výsledku v původním jazyce

The concept of bound states in the continuum and leaky resonances is utilized in the design of a reactive silencer that can effectively suppress significant spectral lines while maintaining a low-pressure drop within the flow duct and does not require additional installation space. By adjusting the geometrical parameters of thin plates that are embedded in a waveguide, quasi-bound states (or leaky resonances) can be achieved. An optimization algorithm is employed to fine-tune these parameters, and this process is illustrated through two specific examples. The resulting design is validated through numerical simulations that account for the effects of low Mach number flow. The investigations showed that it is possible to design a spectral silencer with low-pressure drop based on the chosen approach. By combining several leaky resonances, stopbands were created with a transmission loss of up to 17 dB in a frequency range of 10 Hz.

Název v anglickém jazyce

Novel design for acoustic silencers for ducts with flow based on the bound states in the continuum

Popis výsledku anglicky

The concept of bound states in the continuum and leaky resonances is utilized in the design of a reactive silencer that can effectively suppress significant spectral lines while maintaining a low-pressure drop within the flow duct and does not require additional installation space. By adjusting the geometrical parameters of thin plates that are embedded in a waveguide, quasi-bound states (or leaky resonances) can be achieved. An optimization algorithm is employed to fine-tune these parameters, and this process is illustrated through two specific examples. The resulting design is validated through numerical simulations that account for the effects of low Mach number flow. The investigations showed that it is possible to design a spectral silencer with low-pressure drop based on the chosen approach. By combining several leaky resonances, stopbands were created with a transmission loss of up to 17 dB in a frequency range of 10 Hz.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10307 - Acoustics

Projekt

<a href="/cs/project/GA22-33896S" target="_blank" >GA22-33896S: Pokročilé metody řízení zvukových a elastických vlnových polí: akustické černé díry, metamateriály a funkčně gradované materiály</a><br>

Návaznosti

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

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Archive of Applied Mechanics

ISSN

0939-1533

e-ISSN

1432-0681

Svazek periodika

93

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

10

Strana od-do

4517-4526

Kód UT WoS článku

001087630400001

EID výsledku v databázi Scopus

2-s2.0-85174977262