An algebraic correction for the Westervelt equation to account for the local nonlinear effects in parametric acoustic array

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F22%3A00358569" target="_blank" >RIV/68407700:21230/22:00358569 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1121/10.0011747" target="_blank" >https://doi.org/10.1121/10.0011747</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1121/10.0011747" target="_blank" >10.1121/10.0011747</a>

Jazyk výsledku

angličtina

Název v původním jazyce

An algebraic correction for the Westervelt equation to account for the local nonlinear effects in parametric acoustic array

Popis výsledku v původním jazyce

This work presents a simple computational approach for the calculation of parametrically generated low-frequency sound fields. The Westervelt wave equation is employed as a model equation that accounts for the wave diffraction, attenuation, and nonlinearity. As it is known that the Westervelt equation captures the cumulative nonlinear effects correctly and not the local ones, an algebraic correction is proposed, which includes the local nonlinear effects in the solution of the Westervelt equation. This way, existing computational approaches for the Westervelt equation can be used even in situations where the generated acoustic field differs significantly from the plane progressive waves, such as in the near-field, and where the local effects manifest themselves strongly. The proposed approach is demonstrated and validated on an example of the parametric radiation from a baffled circular piston.

Název v anglickém jazyce

An algebraic correction for the Westervelt equation to account for the local nonlinear effects in parametric acoustic array

Popis výsledku anglicky

This work presents a simple computational approach for the calculation of parametrically generated low-frequency sound fields. The Westervelt wave equation is employed as a model equation that accounts for the wave diffraction, attenuation, and nonlinearity. As it is known that the Westervelt equation captures the cumulative nonlinear effects correctly and not the local ones, an algebraic correction is proposed, which includes the local nonlinear effects in the solution of the Westervelt equation. This way, existing computational approaches for the Westervelt equation can be used even in situations where the generated acoustic field differs significantly from the plane progressive waves, such as in the near-field, and where the local effects manifest themselves strongly. The proposed approach is demonstrated and validated on an example of the parametric radiation from a baffled circular piston.

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

2022

Kód důvěrnosti údajů

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

Název periodika

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA

ISSN

0001-4966

e-ISSN

1520-8524

Svazek periodika

151

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

4046-4052

Kód UT WoS článku

000811844100005

EID výsledku v databázi Scopus

2-s2.0-85132302723