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"
}