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Numerical simulation of airflow through the model of oscillating vocal folds
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SYSNO ASEP 0356959 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Numerical simulation of airflow through the model of oscillating vocal folds Author(s) Prokopova, J. (CZ)
Feistauer, M. (CZ)
Horáček, Jaromír (UT-L) RID, ORCID
Kučera, V. (CZ)Source Title Applied and Computational Mechanics - ISSN 1802-680X
Roč. 4, č. 2 (2010), s. 215-224Number of pages 10 s. Language eng - English Country CZ - Czech Republic Keywords compressible flow ; Navier-Stokes equations ; ALE method ; voice source biomechanics Subject RIV BI - Acoustics R&D Projects OC09019 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z20760514 - UT-L (2005-2011) Annotation This work deals with numerical simulation of flow in time-dependent 2D domains with a special interest in medical applications to airflow in human vocal folds. The mathematical model of this process is described by the compressible Navier.Stokes equations. For the treatment of the time-dependent domain, the Arbitrary Lagrangian-Eulerian (ALE) method is used. The discontinuous Galerkin finite element method (DGFEM) is used for the space semidiscretization of governing equations in the ALE formulation. The time discretization is carried out with the aid of a linearized semi-implicit method with good stability properties. We present some computational results for flow in a channel with a prescribed periodic motion af a part of the channel walls. 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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