Fluid-structure-acoustic interaction problem in modelling of human vocal folds vibration

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F20%3A00535081" target="_blank" >RIV/61388998:_____/20:00535081 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21220/20:00343099

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Fluid-structure-acoustic interaction problem in modelling of human vocal folds vibration

Popis výsledku v původním jazyce

This paper studies vibroacoustic sound produced by self-oscillating human vocal folds model as one of major sound source responsible for human phonation. The human phonation is a complex phenomenon described by interaction of three physical fields - elastic body deformation, fluid flow and acoustics, and their mutual couplings. Therefore it is sometimes referred as fluid-structure-acoustic interaction (FSAI) problem. Here we present FSI problem modelled by linear elasticity theory (vocal fold) and the viscous incompressible airflow modelled by Navier-Stokes equations due to typical low flow velocities of small Mach number. The arbitrary Lagrangian-Euler method (ALE) for the purpose of numerical simulation of the time varying computational domain is applied. In order to model one sound source mechanism of the human phonation the vibroacoustic problem is solved in larger acoustic domain including vocal tract model. The sound source considered in this model is the normal acceleration of the vibrating vocal folds boundary. The numerical models are based on the finite element method. The results of vibroacoustic problem are shown and analyzed.

Název v anglickém jazyce

Fluid-structure-acoustic interaction problem in modelling of human vocal folds vibration

Popis výsledku anglicky

This paper studies vibroacoustic sound produced by self-oscillating human vocal folds model as one of major sound source responsible for human phonation. The human phonation is a complex phenomenon described by interaction of three physical fields - elastic body deformation, fluid flow and acoustics, and their mutual couplings. Therefore it is sometimes referred as fluid-structure-acoustic interaction (FSAI) problem. Here we present FSI problem modelled by linear elasticity theory (vocal fold) and the viscous incompressible airflow modelled by Navier-Stokes equations due to typical low flow velocities of small Mach number. The arbitrary Lagrangian-Euler method (ALE) for the purpose of numerical simulation of the time varying computational domain is applied. In order to model one sound source mechanism of the human phonation the vibroacoustic problem is solved in larger acoustic domain including vocal tract model. The sound source considered in this model is the normal acceleration of the vibrating vocal folds boundary. The numerical models are based on the finite element method. The results of vibroacoustic problem are shown and analyzed.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

10307 - Acoustics

Projekt

<a href="/cs/project/GA19-04477S" target="_blank" >GA19-04477S: Modelování a měření strukturálně-akustických interakcí s prouděním v biomechanice tvorby hlasu člověka</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název statě ve sborníku

Algoritmy 2020

ISBN

978-80-227-5032-5

ISSN

—

e-ISSN

—

Počet stran výsledku

10

Strana od-do

81-90

Název nakladatele

Slovak University of Technology in Bratislava

Místo vydání

Bratislava

Místo konání akce

Vysoké Tatry - Podbanské

Datum konání akce

10. 9. 2020

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

—