A versatile computational approach for the numerical modelling of parametric acoustic array

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F19%3A00336398" target="_blank" >RIV/68407700:21230/19:00336398 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1121/1.5126863" target="_blank" >https://doi.org/10.1121/1.5126863</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1121/1.5126863" target="_blank" >10.1121/1.5126863</a>

Jazyk výsledku

angličtina

Název v původním jazyce

A versatile computational approach for the numerical modelling of parametric acoustic array

Popis výsledku v původním jazyce

This work presents a versatile computational approach for the numerical modeling of a parametrically generated low-frequency sound. The proposed method is based on the quasi-linear approximation, and it does not employ the paraxial approximation. The primary acoustic field is calculated by the Rayleigh integral or the boundary element method; the secondary difference-frequency field is calculated by the finite element method. As governing wave equations, a general second-order wave equation for acoustic pressure, the Westervelt equation, and Kuznetsov equation are tested, and the corresponding numerical results are compared. The proposed approach allows studying the near-field, far-field, as well as the off-axis field of the difference-frequency wave parametrically radiated from complex emitters. As numerical examples, parametric radiation from a baffled piston and a piston combined with a horn are examined.

Název v anglickém jazyce

A versatile computational approach for the numerical modelling of parametric acoustic array

Popis výsledku anglicky

This work presents a versatile computational approach for the numerical modeling of a parametrically generated low-frequency sound. The proposed method is based on the quasi-linear approximation, and it does not employ the paraxial approximation. The primary acoustic field is calculated by the Rayleigh integral or the boundary element method; the secondary difference-frequency field is calculated by the finite element method. As governing wave equations, a general second-order wave equation for acoustic pressure, the Westervelt equation, and Kuznetsov equation are tested, and the corresponding numerical results are compared. The proposed approach allows studying the near-field, far-field, as well as the off-axis field of the difference-frequency wave parametrically radiated from complex emitters. As numerical examples, parametric radiation from a baffled piston and a piston combined with a horn are examined.

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

2019

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

146

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

2163-2169

Kód UT WoS článku

000506814200019

EID výsledku v databázi Scopus

2-s2.0-85073079279