Aerodynamic Transfer of Energy to Vibrating Vocal Folds for Different Driving Mechanisms

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F19%3A00329625" target="_blank" >RIV/68407700:21220/19:00329625 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.it.cas.cz/fm/im/im/proceeding/2019/27" target="_blank" >http://www.it.cas.cz/fm/im/im/proceeding/2019/27</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.14311/TPFM.2019.027" target="_blank" >10.14311/TPFM.2019.027</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Aerodynamic Transfer of Energy to Vibrating Vocal Folds for Different Driving Mechanisms

Popis výsledku v původním jazyce

This paper studies the mutual energy transfer between the fluid flow, described by incompressible Navier-Stokes equations, and the elastic body represented by vocal folds. The aerodynamic energy transfer function describes the amount and more importantly the sign of the energy exchange. It determines if the vocal fold vibrations are self-excited or prescribed. The energy transfer function is studied for three different driving mechanisms introduced by different inlet boundary conditions (BC). The most frequently used inlet BCs for incompressible model of fluid flow approximated by the finite element method are either Dirichlet BC giving the inlet velocity or do-nothing type of BC prescribing the pressure difference between the inlet and the outlet. Since the numerical simulations with both aforementioned BCs do not provide results observed experimentally the newly introduced BC based on the penalization approach seems as remedy. The numerical model consists of strongly coupled partitioned scheme based on the stabilized finite element method.

Název v anglickém jazyce

Aerodynamic Transfer of Energy to Vibrating Vocal Folds for Different Driving Mechanisms

Popis výsledku anglicky

This paper studies the mutual energy transfer between the fluid flow, described by incompressible Navier-Stokes equations, and the elastic body represented by vocal folds. The aerodynamic energy transfer function describes the amount and more importantly the sign of the energy exchange. It determines if the vocal fold vibrations are self-excited or prescribed. The energy transfer function is studied for three different driving mechanisms introduced by different inlet boundary conditions (BC). The most frequently used inlet BCs for incompressible model of fluid flow approximated by the finite element method are either Dirichlet BC giving the inlet velocity or do-nothing type of BC prescribing the pressure difference between the inlet and the outlet. Since the numerical simulations with both aforementioned BCs do not provide results observed experimentally the newly introduced BC based on the penalization approach seems as remedy. The numerical model consists of strongly coupled partitioned scheme based on the stabilized finite element method.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings Topical Problems of Fluid Mechanics 2019

ISBN

978-80-87012-69-7

ISSN

2336-5781

e-ISSN

—

Počet stran výsledku

8

Strana od-do

197-204

Název nakladatele

Institute of Thermomechanics, AS CR, v.v.i.

Místo vydání

Prague

Místo konání akce

Praha

Datum konání akce

20. 2. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000519337800027