The Flow-Induced Vibrations of Vocal Folds Approximated by the Finite Element Method

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F20%3A00538966" target="_blank" >RIV/61388998:_____/20:00538966 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/978-981-15-8049-9_23" target="_blank" >http://dx.doi.org/10.1007/978-981-15-8049-9_23</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/978-981-15-8049-9_23" target="_blank" >10.1007/978-981-15-8049-9_23</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The Flow-Induced Vibrations of Vocal Folds Approximated by the Finite Element Method

Popis výsledku v původním jazyce

This paper is interested in mathematical model and numerical simulation of the flow-induced vibrations of human vocal folds model. The elastic tissue of the vocal fold is described by the linear elasticity and the viscous fluid flow in the glottal channel is modelled with the aid of the incompressible Navier-Stokes equations. To incorporate the time change of the fluid domain into the flow description, the arbitrary Lagrangian-Eulerian (ALE) method is used. A special attention is paid to inlet boundary conditions. Besides the classical Dirichlet boundary condition the penalization approach is presented, which allows to relax the exact inlet velocity during the channel closing phase. Such a situation is highly interesting for simulation of human phonation. The developed numerical schemes for the fluid flow and the elastic body are implemented by an in-house solver based on the finite element method. Specially, the fluid flow scheme is approximated with the help of SUPG and PSPG stabilization methods. The implemented numerical partitioned scheme is strongly coupled. Finally, the numerical results of flow induced vibrations are presented and effects of the aforementioned inlet boundary conditions are discussed.

Název v anglickém jazyce

The Flow-Induced Vibrations of Vocal Folds Approximated by the Finite Element Method

Popis výsledku anglicky

This paper is interested in mathematical model and numerical simulation of the flow-induced vibrations of human vocal folds model. The elastic tissue of the vocal fold is described by the linear elasticity and the viscous fluid flow in the glottal channel is modelled with the aid of the incompressible Navier-Stokes equations. To incorporate the time change of the fluid domain into the flow description, the arbitrary Lagrangian-Eulerian (ALE) method is used. A special attention is paid to inlet boundary conditions. Besides the classical Dirichlet boundary condition the penalization approach is presented, which allows to relax the exact inlet velocity during the channel closing phase. Such a situation is highly interesting for simulation of human phonation. The developed numerical schemes for the fluid flow and the elastic body are implemented by an in-house solver based on the finite element method. Specially, the fluid flow scheme is approximated with the help of SUPG and PSPG stabilization methods. The implemented numerical partitioned scheme is strongly coupled. Finally, the numerical results of flow induced vibrations are presented and effects of the aforementioned inlet boundary conditions are discussed.

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

Proceedings of the 14th International conference on vibration problems. ICOVP 2019

ISBN

978-981-15-8048-2

ISSN

2195-4356

e-ISSN

2195-4364

Počet stran výsledku

12

Strana od-do

377-388

Název nakladatele

Springer

Místo vydání

Singapur

Místo konání akce

Hersonissos

Datum konání akce

1. 9. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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