Number of the records: 1
Numerical Simulation of the Self-Oscillations of the Vocal Folds and of the Resulting Acoustic Phenomena in the Vocal Tract
- 1.
SYSNO ASEP 0380634 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Numerical Simulation of the Self-Oscillations of the Vocal Folds and of the Resulting Acoustic Phenomena in the Vocal Tract Author(s) Švancara, Pavel (UT-L) RID, ORCID
Horáček, Jaromír (UT-L) RID, ORCID
Švec, J. G. (CZ)Source Title Advances in Mechanisms Design : Proceedings of TMM 2012, 8.. - Dordrecht : Springer, 2012 / Beran J. ; Bílek M. ; Hejnová M. ; Žabka P. - ISSN 2211-0984 - ISBN 978-94-007-5124-8 Pages s. 357-363 Number of pages 7 s. Publication form Print - P Action International Conference on the Theory and Mechanisms /11./ Event date 04.09.2012-06.09.2012 VEvent location Liberec Country CZ - Czech Republic Event type WRD Language eng - English Country NL - Netherlands Keywords FE model ; vocal-fold motion ; Navier-Stokes equation Subject RIV BI - Acoustics R&D Projects GAP101/12/1306 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z20760514 - UT-L (2005-2011) DOI 10.1007/978-94-007-5125-5_47 Annotation The study presents a 3D finite element (FE) model of the flow-induced self-oscillation of the human vocal folds in interaction with acoustics of simplified vocal tract models. The 3D vocal tract models of the acoustics spaces shaped for simulation of phonation of Czech vowels [a:], [i:] and [u:] were created by converting the data from the magnetic resonance images (MRI). For modelling of the fluid-structure interaction, explicit coupling scheme with separated solvers for fluid and structure domain was utilized. The FE model comprises vocal folds pretension before starting phonation, large deformation of the vocal-fold collisions, fluid-structure interaction, morphing the fluid mesh according to the vocal-fold motion, unsteady viscous airflow described by the Navier-Stokes equations and airflow separation. The developed FE model enables to study the relationship between flow-induced vibrations of the vocal folds and acoustic wave propagation in the vocal tract and can also be used to simulate for example pathological changes in the vocal fold tissue and their influence on the voice production. Workplace Institute of Thermomechanics Contact Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Year of Publishing 2013
Number of the records: 1