Numerical Modelling of Boundary Layers and Far Field Acoustic Propagation in Thermoviscous Fluid

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F19%3A00336504" target="_blank" >RIV/68407700:21230/19:00336504 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.3813/AAA.919392" target="_blank" >https://doi.org/10.3813/AAA.919392</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3813/AAA.919392" target="_blank" >10.3813/AAA.919392</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Numerical Modelling of Boundary Layers and Far Field Acoustic Propagation in Thermoviscous Fluid

Popis výsledku v původním jazyce

To model linear acoustics in a thermoviscous fluid in open domain and time-harmonic regime, a Finite Element formulation in a bounded meshed domain is combined with the integral representation of the field for the propagative solution. The integrals are non-singular and involve the only Finite Element node values for temperature variation and particle velocity variables. To overcome the non-uniqueness of solutions at fictitious resonant frequencies, a Burton-Miller combination of integral representation is used. This formulation is suitable to compute acoustic radiation, scattering and diffraction by objects or mutual interaction between transducers. Two-dimensional computational experiments are presented in an infinite, open domain (exterior), showing that the model can be achieved in meshing only a thin domain surrounding the physical boundaries of a device.

Název v anglickém jazyce

Numerical Modelling of Boundary Layers and Far Field Acoustic Propagation in Thermoviscous Fluid

Popis výsledku anglicky

To model linear acoustics in a thermoviscous fluid in open domain and time-harmonic regime, a Finite Element formulation in a bounded meshed domain is combined with the integral representation of the field for the propagative solution. The integrals are non-singular and involve the only Finite Element node values for temperature variation and particle velocity variables. To overcome the non-uniqueness of solutions at fictitious resonant frequencies, a Burton-Miller combination of integral representation is used. This formulation is suitable to compute acoustic radiation, scattering and diffraction by objects or mutual interaction between transducers. Two-dimensional computational experiments are presented in an infinite, open domain (exterior), showing that the model can be achieved in meshing only a thin domain surrounding the physical boundaries of a device.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10307 - Acoustics

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

ACTA ACUSTICA UNITED WITH ACUSTICA

ISSN

1610-1928

e-ISSN

1861-9959

Svazek periodika

105

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

12

Strana od-do

1137-1148

Kód UT WoS článku

000506577800024

EID výsledku v databázi Scopus

2-s2.0-85077948199