Dynamic mode decomposition analysis of flow-induced vibrations of vocal folds model
Identifikátory výsledku
Kód výsledku v 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>
Výsledek na webu
<a href="https://www.aeroelasticity2021.com/" target="_blank" >https://www.aeroelasticity2021.com/</a>
DOI - Digital Object Identifier
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Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Dynamic mode decomposition analysis of flow-induced vibrations of vocal folds model
Popis výsledku v původním jazyce
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.
Název v anglickém jazyce
Dynamic mode decomposition analysis of flow-induced vibrations of vocal folds model
Popis výsledku anglicky
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.
Klasifikace
Druh
O - Ostatní výsledky
CEP obor
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OECD FORD obor
10303 - Particles and field physics
Návaznosti výsledku
Projekt
<a href="/cs/project/GA19-04477S" target="_blank" >GA19-04477S: Modelování a měření strukturálně-akustických interakcí s prouděním v biomechanice tvorby hlasu člověka</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2021
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů