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On the FE modeling of vocal folds pathologies
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SYSNO ASEP 0495851 Document Type A - Abstract R&D Document Type O - Ostatní Title On the FE modeling of vocal folds pathologies Author(s) Hájek, P. (CZ)
Švancara, Pavel (UT-L) RID, ORCID
Horáček, Jaromír (UT-L) RID, ORCID
Švec, J.G. (CZ)Number of authors 4 Source Title Computational Mechanics 2018 - Book of extended abstracts. - Plzeň : University of West Bohemia, Plzeň, 2018 / Adámek V. ; Jonášová A. - ISBN 978-80-261-0819-1
S. 25-26Number of pages 2 s. Publication form Medium - C Action Computational Mechanics 2018 /34./ Event date 31.10.2018 - 02.11.2018 VEvent location Srní Country CZ - Czech Republic Event type EUR Language eng - English Country CZ - Czech Republic Keywords biomechanics of voice ; numerical simulation of phonation ; compressible Navier - Stokes equations Subject RIV BI - Acoustics OECD category Acoustics R&D Projects GA16-01246S GA ČR - Czech Science Foundation (CSF) Institutional support UT-L - RVO:61388998 Annotation Numerical modelling of the vocal folds (VF) pathologies can be realized by varying properties of VF layers. The aim of this paper is to show how layer properties affect vowel production in the finite element (FE) model of VF self-sustained oscillation with fluid-structure-acoustic interaction (FSAI). Fluid flow coupled with structure domain are solved separately in program system ANSYS 15.0. The FE model featuring several phenomena present during human phonation: compressible unsteady viscous flow modelled by Navier-Stokes equations, setting to a phonatory position and large deformations of the VF, air flow interruption during. VF closure, excitation by lung pressure and transient effects. The fluid mesh is deformed according to VF motion using of Arbitrary Lagrangian-Eulerian algorithm. Aforementioned phenomena combined with changing properties of VF layers could reveal unknown mechanisms occurring during phonation of pathologic VF.
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 2019
Number of the records: 1