Two-dimensional finite element model of vowel production: properties of self-oscillating vocal folds interacting with fluid flow

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F17%3APU126118" target="_blank" >RIV/00216305:26210/17:PU126118 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.pevoc.org/" target="_blank" >http://www.pevoc.org/</a>

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Two-dimensional finite element model of vowel production: properties of self-oscillating vocal folds interacting with fluid flow

Popis výsledku v původním jazyce

The current study concerns finite element (FE) model of flow-induced self-sustained oscillation of the human vocal folds (VF) in interaction with vocal tract (VT) acoustics. Two dimensional (2D) FE model consists of the fluid model (involving the VT and trachea) and the structure model (the VF). Geometry of the VT was converted from magnetic resonance images (MRI) data for production of a Czech vowels. The VF model is based on widely used Scherer’s M5 geometry with four-layered structure comprising epithelium, superficial lamina propria (SLP), ligament and muscle. For solving fluid-structure interaction explicit coupling scheme is applied with separate solvers for the structure and fluid domain. Acoustic wave propagation is obtained from solution of compressible NS equations. Phonation of the Czech vowels [a:], [i:] and [u:] were simulated and influence of thickness and material characteristics of the SLP on vocal folds vibrations and produced sound were analysed. Using this model was also analyzed th

Název v anglickém jazyce

Two-dimensional finite element model of vowel production: properties of self-oscillating vocal folds interacting with fluid flow

Popis výsledku anglicky

The current study concerns finite element (FE) model of flow-induced self-sustained oscillation of the human vocal folds (VF) in interaction with vocal tract (VT) acoustics. Two dimensional (2D) FE model consists of the fluid model (involving the VT and trachea) and the structure model (the VF). Geometry of the VT was converted from magnetic resonance images (MRI) data for production of a Czech vowels. The VF model is based on widely used Scherer’s M5 geometry with four-layered structure comprising epithelium, superficial lamina propria (SLP), ligament and muscle. For solving fluid-structure interaction explicit coupling scheme is applied with separate solvers for the structure and fluid domain. Acoustic wave propagation is obtained from solution of compressible NS equations. Phonation of the Czech vowels [a:], [i:] and [u:] were simulated and influence of thickness and material characteristics of the SLP on vocal folds vibrations and produced sound were analysed. Using this model was also analyzed th

Druh

O - Ostatní výsledky

CEP obor

—

OECD FORD obor

10307 - Acoustics

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

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