Original title: Aerodynamic transfer of energy to vibrating vocal folds for different driving mechanisms
Authors: Valášek, J. ; Sváček, P. ; Horáček, Jaromír
Document type: Papers
Conference/Event: Conference TOPICAL PROBLEMS OF FLUID MECHANICS 2018, Praha (CZ), 20180221
Year: 2018
Language: eng
Abstract: This paper studies the mutual energy transfer between the fluid flow, described by incompressible Navier-Stokes equations, and the elastic body represented by vocal folds. The aerodynamic energy transfer function describes the amount and more importantly the sign of the energy exchange. It determines if the vocal fold vibrations are self-excited or prescribed.The energy transfer function is studied for three different driving mechanisms introduced by different inlet boundary conditions (BC). The most frequently used inlet BCs for incompressible model of fluid flow approximated by the finite element method are either Dirichlet BC giving the inlet velocity or do-nothing type of BC prescribing the pressure difference between the inlet and the outlet. Since the numerical simulations with both aforementioned BCs do not provide results observed experimentally the newly introduced BC based on the penalization approach seems as remedy. The numerical model consists of strongly coupled partitioned scheme based on the stabilized finite element method.\n\n
Keywords: energy transfer function; finite element method; inlet boundary conditions; weakly imposed Dirichlet boundary condition
Host item entry: Topical Problems of Fluid Mechanics 2018, ISBN 978-80-87012-65-9, ISSN 2336-5781

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/11104/0295177

Permalink: http://www.nusl.cz/ntk/nusl-393834


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Research > Institutes ASCR > Institute of Thermomechanics
Conference materials > Papers