Publication detail
FE modelling of the fluid-structure-acoustic interaction for the vocal folds self-oscillation
Švancara, P. Horáček, J. Hrůza V.
Czech title
MKP modelování interakce mezi strukturou a tekutinou u samobuzeného kmitání lidských hlasivek
English title
FE modelling of the fluid-structure-acoustic interaction for the vocal folds self-oscillation
Type
conference paper
Language
en
Original abstract
The flow induced self/oscillation of the human vocal folds in interaction with acoustic processes on the simplified vocal tract model was explored by 3D FE model. Developed FE model includes vocal folds pretension before phonation, large deformations of the vocal tissue, vocal folds contact, fluid-structure interaction, morphing the fluid mesh according the vocal folds motion (ALE approach), unsteady viscous compressible airflow described by the Navier-Stokes equations and airflow separation during the glottis closure. Iterative partitioned approach is used for modelling the fluid-structure interaction. Computed results prove that the developed model can be used for simulation of the vocal folds self-oscillation and resulting acoustic waves. The developed model enables to numerically simulate an influence of some pathological changes in the vocal fold tissue on the voice production.
Czech abstract
V článku je prezentován 3D konečněprvkový (MKP) model proudem vzduchu vyvolaného samobuzeného kmitání lidských hlasivek v kombinaci s akustickými procesy v zjednodušeném modelu vokálního traktu. Vytvořený MKP model zahrnuje velké deformace tkáně hlasivek, předpětí hlasivek před začátkem fonace, kontakt hlasivek, interakci struktury s tekutinou, morfování sítě vzduchu podle pohybu hlasivek (ALE metoda), nestacionární viskózní stlačitelné proudění popsané pomocí Navier-Stokesových rovnic a přerušování proudu vzduchu během uzavření hlasivek. Výsledky výpočtů potvrdily, že vytvořený model může být použit pro simulaci samobuzeného kmitání lidských hlasivek a jimi vytvořených akustických vln. Vytvořený model umožňuje stadium vlivu patologických změn v tkáni hlasivek na vytvářený hlas.
English abstract
The flow induced self/oscillation of the human vocal folds in interaction with acoustic processes on the simplified vocal tract model was explored by 3D FE model. Developed FE model includes vocal folds pretension before phonation, large deformations of the vocal tissue, vocal folds contact, fluid-structure interaction, morphing the fluid mesh according the vocal folds motion (ALE approach), unsteady viscous compressible airflow described by the Navier-Stokes equations and airflow separation during the glottis closure. Iterative partitioned approach is used for modelling the fluid-structure interaction. Computed results prove that the developed model can be used for simulation of the vocal folds self-oscillation and resulting acoustic waves. The developed model enables to numerically simulate an influence of some pathological changes in the vocal fold tissue on the voice production.
Keywords in Czech
biomechanika lidského hlasu, numerická simulace fonace, samobuzené kmitání
Keywords in English
biomechanics of human voice, numerical simulation of voice production, self-oscilation
RIV year
2011
Released
05.09.2011
Publisher
Springer
Location
Berlin, Germany
ISBN
978-94-007-2068-8
ISSN
0930-8989
Book
Vibration Problems ICOVP 2011
Number
139
Edition number
139
Pages from–to
801–807
Pages count
7
BIBTEX
@inproceedings{BUT90551,
author="Pavel {Švancara} and Jaromír {Horáček} and Václav {Hrůza},
title="FE modelling of the fluid-structure-acoustic interaction for the vocal folds self-oscillation",
booktitle="Vibration Problems ICOVP 2011",
year="2011",
number="139",
month="September",
pages="801--807",
publisher="Springer",
address="Berlin, Germany",
isbn="978-94-007-2068-8",
issn="0930-8989"
}