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Original title:
Numerical simulation of videokymographic images from the results of the finite element model
Authors: Švancara, P. ; Horáček, Jaromír ; Martínek, T. ; Švec, J. G.
Document type: Papers
Conference/Event: Engineering Mechanics 2014 /20./, Svratka (CZ), 2014-05-12 / 2014-05-15
Year: 2014
Language: eng
Abstract: The study presents a two-dimensional (2D) finite element (FE) model of the fluid-structure-acoustic interaction during flow induced self-oscillation of the human vocal folds. The FE model combines the FE models of the vocal folds, the trachea and the simplified human vocal tract shaped for phonation of vowel [a:]. The fluid-structure interaction is solved using explicit coupling scheme with separated solvers for structure and fluid domain. The developed FE model comprises large deformations of the vocal-fold tissue, vocal-fold contact, fluid-structure interaction, morphing the fluid mesh according to the vocal-fold motion (Arbitrary Lagrangian-Eulerian approach), solution of unsteady viscous compressible airflow described by the Navier-Stokes equations and airflow separation during the glottis closure. The effect of lamina propria thickness and material properties on simulated videokymographic (VKG) images of vocal-fold vibrations are analyzed. Such variation of the lamina propria properties can be caused by certain vocal-fold pathologies such as Reinke's edema. The developed FE model can be used to study relations among pathological changes in vocal folds tissue, the resulting VKG images and the produced sound spectra.
Keywords: biomechanics of voice; fluid-structure-acoustic interaction; simulation of phonation; videokymography
Project no.: GAP101/12/1306 (CEP)
Funding provider: GA ČR
Host item entry: Engineering mechanics 2014, ISBN 978-80-214-4871-1, ISSN 1805-8248
Institution: Institute of Thermomechanics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0239494
Permalink: http://www.nusl.cz/ntk/nusl-177620
The record appears in these collections:
Research > Institutes ASCR > Institute of Thermomechanics
Conference materials > Papers
Authors: Švancara, P. ; Horáček, Jaromír ; Martínek, T. ; Švec, J. G.
Document type: Papers
Conference/Event: Engineering Mechanics 2014 /20./, Svratka (CZ), 2014-05-12 / 2014-05-15
Year: 2014
Language: eng
Abstract: The study presents a two-dimensional (2D) finite element (FE) model of the fluid-structure-acoustic interaction during flow induced self-oscillation of the human vocal folds. The FE model combines the FE models of the vocal folds, the trachea and the simplified human vocal tract shaped for phonation of vowel [a:]. The fluid-structure interaction is solved using explicit coupling scheme with separated solvers for structure and fluid domain. The developed FE model comprises large deformations of the vocal-fold tissue, vocal-fold contact, fluid-structure interaction, morphing the fluid mesh according to the vocal-fold motion (Arbitrary Lagrangian-Eulerian approach), solution of unsteady viscous compressible airflow described by the Navier-Stokes equations and airflow separation during the glottis closure. The effect of lamina propria thickness and material properties on simulated videokymographic (VKG) images of vocal-fold vibrations are analyzed. Such variation of the lamina propria properties can be caused by certain vocal-fold pathologies such as Reinke's edema. The developed FE model can be used to study relations among pathological changes in vocal folds tissue, the resulting VKG images and the produced sound spectra.
Keywords: biomechanics of voice; fluid-structure-acoustic interaction; simulation of phonation; videokymography
Project no.: GAP101/12/1306 (CEP)
Funding provider: GA ČR
Host item entry: Engineering mechanics 2014, ISBN 978-80-214-4871-1, ISSN 1805-8248
Institution: Institute of Thermomechanics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0239494
Permalink: http://www.nusl.cz/ntk/nusl-177620
The record appears in these collections:
Research > Institutes ASCR > Institute of Thermomechanics
Conference materials > Papers
Record created 2014-11-27, last modified 2021-11-24