Publication detail
FE model of interaction between flow induced vocal folds oscillations and acoustic processes in the vocal tract
ŠVANCARA, P. HRŮZA, V. HORÁČK, J.
Czech title
MKP model interakce mezi vzduchem vybuzeným kmitáním hlasivek a akustickými procesy ve vokálním traktu
English title
FE model of interaction between flow induced vocal folds oscillations and acoustic processes in the vocal tract
Type
conference paper
Language
en
Original abstract
In this study a 3D finite element (FE) model of self-oscillating human vocal folds in interaction with the airflow coming from the subglottal spaces to simplified spaces of the vocal tract. FE model includes fluid-structure interaction, morphing the fluid mesh according the vocal folds motion, unsteady viscous compressible airflow, airflow separation, large deformations of the vocal fold tissue, vocal folds pretension before phonation and vocal folds contact during the collisions. Computed results prove that the developed model and algorithms can be used for simulations in biomechanics of human vocal folds, especially for numerical simulations of quantities that are difficult to measure in clinical research.
Czech abstract
V této práci je prezentován prostorový (3D) konečněprvkový (MKP) model interakce vzduchem vybuzených kmitů hlasivek sakustickými procesy ve vokálním traktu. Model je poháněn proudem vzduchu dodávaným z plic. Vytvořený MKP model zahrnuje velké deformace tkáně hlasivek, předpětí hlasivek před začátkem fonace, kontakt hlasivek, nestacionární viskózní stlačitelné proudění a přerušování proudu vzduchu. Výsledky výpočtů potvrdily že vytvořený model může být požit pro simulaci bimechaniky lidských hlasivek a zejména pro určení těch veličin které je obtížné zjistit experimentálně.
English abstract
In this study a 3D finite element (FE) model of self-oscillating human vocal folds in interaction with the airflow coming from the subglottal spaces to simplified spaces of the vocal tract. FE model includes fluid-structure interaction, morphing the fluid mesh according the vocal folds motion, unsteady viscous compressible airflow, airflow separation, large deformations of the vocal fold tissue, vocal folds pretension before phonation and vocal folds contact during the collisions. Computed results prove that the developed model and algorithms can be used for simulations in biomechanics of human vocal folds, especially for numerical simulations of quantities that are difficult to measure in clinical research.
Keywords in Czech
lidské hlasivky, MKP, interakce fluid-struktura, akustika
Keywords in English
vocal folds, FEM, fluid-structure interaction, acoustics
RIV year
2009
Released
09.11.2009
Publisher
Západočeská univerzita
Location
Nečtiny
ISBN
978-80-7043-824-4
Book
Computational mechanics 2009
Pages from–to
20–21
Pages count
2
BIBTEX
@inproceedings{BUT29407,
author="Pavel {Švancara} and Václav {Hrůza} and Jaromír {Horáček},
title="FE model of interaction between flow induced vocal folds oscillations and acoustic processes in the vocal tract",
booktitle="Computational mechanics 2009",
year="2009",
month="November",
pages="20--21",
publisher="Západočeská univerzita",
address="Nečtiny",
isbn="978-80-7043-824-4"
}