Detail publikace

Effects of Turbulence in FE Model of Human Vocal Folds Self-oscillation

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

Originální název

Effects of Turbulence in FE Model of Human Vocal Folds Self-oscillation

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

angličtina

Originální abstrakt

The purpose of the study is to determine whether a turbulence model in fluid flow calculation affects the vocal folds (VF) vibration and the acoustics of human vocal tract (VT). The objective is examined using a two-dimensional (2D) finite element (FE) model of the fluid-structure-acoustic interaction for self- sustained oscillations of the VF. The FE model consists of the models of the VF, the trachea and a simplified model of the human VT. The developed FE model includes large deformations of the VF tissue and VF contact interrupting the airflow during glottis closure. The airflow is modelled by the unsteady viscous compressible Navier-Stokes equations, without and with the Shear Stress Transport (SST) turbulence model. Fluid-structure interaction (FSI) and morphing of the fluid mesh are realized using Arbitrary Lagrangian- Eulerian (ALE) approach. The method is applied on the FE model of the VT shaped for the Czech vowel [a:]. Also effect of varying stiffness of the superficial lamina propria (SLP) is analyzed. The numerical simulations showed that considering of the turbulence affects mainly higher frequencies apparent in a frequency spectrum of the VT acoustics.

Klíčová slova

Simulation of phonation; SST turbulence model; Fluid-structure-acoustic interaction; Finite element method; Biomechanics of voice

Autoři

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

Vydáno

15. 5. 2017

Nakladatel

Institute of Thermomechanics, Academy of Sciences of the Czech Republic, v. v. i., Prague

Místo

Svratka

ISBN

978-80-214-5497-2

Kniha

Engineering Mechanics 2017

ISSN

1805-8248

Periodikum

Engineering Mechanics ....

Ročník

23

Číslo

1

Stát

Česká republika

Strany od

366

Strany do

369

Strany počet

4

URL

http://apps.webofknowledge.com/full_record.do?product=WOS&search_mode=GeneralSearch&qid=1&SID=Q1m7oHnd8iQOER6nsux&page=1&doc=1

BibTex

@inproceedings{BUT136512,
  author="Petr {Hájek} and Pavel {Švancara} and Jaromír {Horáček} and Jan G. {Švec}",
  title="Effects of Turbulence in FE Model of Human Vocal Folds Self-oscillation",
  booktitle="Engineering Mechanics 2017",
  year="2017",
  journal="Engineering Mechanics ....",
  volume="23",
  number="1",
  pages="366--369",
  publisher="Institute of Thermomechanics, Academy of Sciences of the Czech Republic, v. v. i., Prague",
  address="Svratka",
  isbn="978-80-214-5497-2",
  issn="1805-8248",
  url="http://apps.webofknowledge.com/full_record.do?product=WOS&search_mode=GeneralSearch&qid=1&SID=Q1m7oHnd8iQOER6nsux&page=1&doc=1"
}