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Numerical approximation of flow in a symmetric channel with vibrating walls
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SYSNO ASEP 0356958 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Numerical approximation of flow in a symmetric channel with vibrating walls Author(s) Sváček, P. (CZ)
Horáček, Jaromír (UT-L) RID, ORCIDSource Title Applied and Computational Mechanics - ISSN 1802-680X
Roč. 4, č. 2 (2010), s. 225-236Number of pages 12 s. Language eng - English Country CZ - Czech Republic Keywords biomechanics of voice production ; incompressible Navier-Stokes equations ; ALE method Subject RIV BI - Acoustics R&D Projects OC09019 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z20760514 - UT-L (2005-2011) Annotation In this paper the numerical solution of two dimensional fluid-structure interaction problem is addressed. The fluid motion is modelled by the incompressible unsteady Navier-Stokes equations. The spatial discretization by stabilized finite element method is used. The motion of the computational domain is treated with the aid of Arbitrary Lagrangian-Eulerian (ALE) method. The time-space problem is solved with the aid of multigrid method. The method is applied onto a problem of interaction of channel flow with moving wals, which models the air flow in the glottal region of the human vocal tract. The pressure boundary conditions and the effects of the isotropic and anisotropic mesh refinement are discussed. The numerical results are presented. Workplace Institute of Thermomechanics Contact Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Year of Publishing 2011
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