Dynamic mode decomposition analysis of flow-induced vibrations of vocal folds model

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F21%3A00353482" target="_blank" >RIV/68407700:21220/21:00353482 - isvavai.cz</a>
Result on the web
<a href="https://www.aeroelasticity2021.com/" target="_blank" >https://www.aeroelasticity2021.com/</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Dynamic mode decomposition analysis of flow-induced vibrations of vocal folds model
Original language description
The flow-induced vibrations (FIVs) of vocal folds (VFs) model are here simulated and analyzed. The interaction between two different physical fields is considered – vibrations of elastic body described by the linear elasticity theory and incompressible viscous fluid flow modelled by the Navier-Stokes equations in the arbitrary Lagrangian-Eulerian (ALE) formulation in order to take into account the time-dependence of the flow domain. Particularly, the inlet penalization boundary condition is here adopted as a promising option for internal aerodynamics configurations with collapsing channel walls where the penalization parameter can control maximal pressure drop between the inlet and the outlet. The numerical solution of FIVs is based on the stabilized finite element method (FEM) implemented by in-house solver. Further, the dynamic mode decomposition (DMD) is used for the analysis of the VFs vibrations. The dominating DMD modes together with their frequency and growth/decay rate are determined and the connection to classical modal analysis is established. Finally a short prediction of VFs vibrations in the flutter regime is shown.
Czech name
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Czech description
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Project
<a href="/en/project/GA19-04477S" target="_blank" >GA19-04477S: Modelling and measurements of fluid-structure-acoustic interactions in biomechanics of human voice production</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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