Publication detail

Finite-element modeling of vocal fold self-oscillations in interaction with vocal tract: Comparison of incompressible and compressible flow model

HÁJEK, P. ŠVANCARA, P. HORÁČEK, J. ŠVEC, J.

Original Title

Finite-element modeling of vocal fold self-oscillations in interaction with vocal tract: Comparison of incompressible and compressible flow model

Type

journal article in Scopus

Language

English

Original Abstract

Finite-element modeling of self-sustained vocal fold oscillations during voice production has mostly considered the air as incompressible, due to numerical complexity. This study overcomes this limitation and studies the influence of air compressibility on phonatory pressures, flow and vocal fold vibratory characteristics. A two-dimensional finite-element model is used, which incorporates layered vocal fold structure, vocal fold collisions, large deformations of the vocal fold tissue, morphing the fluid mesh according to the vocal fold motion by the arbitrary Lagrangian-Eulerian approach and vocal tract model of Czech vowel [i:] based on data from magnetic resonance images. Unsteady viscous compressible or incompressible airflow is described by the Navier-Stokes equations. An explicit coupling scheme with separated solvers for structure and fluid domain was used for modeling the fluid-structure-acoustic interaction. Results of the simulations show clear differences in the glottal flow and vocal fold vibration waveforms between the incompressible and compressible fluid flow. These results provide the evidence on the existence of the coupling between the vocal tract acoustics and the glottal flow (Level 1 interactions), as well as between the vocal tract acoustics and the vocal fold vibrations (Level 2 interactions).

Keywords

biomechanics of voice; compressible flow; finite element method; fluid-structure-acoustic interaction; simulation of phonation

Authors

HÁJEK, P.; ŠVANCARA, P.; HORÁČEK, J.; ŠVEC, J.

Released

8. 7. 2021

Publisher

University of West Bohemia

Location

Plzeň

ISBN

1802-680X

Periodical

Applied andComputational Mechanics

Year of study

15

Number

2

State

Czech Republic

Pages from

133

Pages to

152

Pages count

20

URL

https://www.kme.zcu.cz/acm/acm/article/view/672

Full text in the Digital Library

http://hdl.handle.net/11012/203970

BibTex

@article{BUT175617,
  author="Petr {Hájek} and Pavel {Švancara} and Jaromír {Horáček} and Jan G. {Švec}",
  title="Finite-element modeling of vocal fold self-oscillations in interaction with vocal tract: Comparison of incompressible and compressible flow model",
  journal="Applied andComputational Mechanics",
  year="2021",
  volume="15",
  number="2",
  pages="133--152",
  doi="10.24132/acm.2021.672",
  issn="1802-680X",
  url="https://www.kme.zcu.cz/acm/acm/article/view/672"
}