A 2D finite-element scheme for fluid–solid–acoustic interactions and its application to human phonation
| Autor: | Michael Breuer, Manfred Kaltenbacher, Michael Döllinger, Gerhard Link |
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| Rok vydání: | 2009 |
| Předmět: |
Continuum mechanics
Mechanical Engineering Mathematical analysis Computational Mechanics General Physics and Astronomy Fluid mechanics Eulerian path Finite element method Computer Science Applications Physics::Fluid Dynamics Euler–Lagrange equation symbols.namesake Classical mechanics Mechanics of Materials Fluid–structure interaction Aeroacoustics symbols Galerkin method Mathematics |
| Zdroj: | Computer Methods in Applied Mechanics and Engineering. 198:3321-3334 |
| ISSN: | 0045-7825 |
| DOI: | 10.1016/j.cma.2009.06.009 |
| Popis: | We present a recently developed approach for the modeling of fluid–solid–acoustic interaction problems. For the efficient numerical solution of the coupled three-field problem we apply the finite-element method. The mechanical and the acoustic fields are approximated by a standard Galerkin scheme. A residual-based stabilization method is chosen for the fluid field. The interaction of the Eulerian fluid field with the Lagrangian mechanical field is based on the Arbitrary-Lagrangian–Eulerian (ALE) method and is iteratively coupled in a strong sense. The solid–acoustic interaction is based on continuum mechanics, and the fluid–acoustic coupling on Lighthill’s analogy. The new steps of our scheme are verified through validation examples. Finally, a fluid–solid–acoustic simulation of the human phonation process is presented based on a realistic model. |
| Databáze: | OpenAIRE |
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