Number of the records: 1  

Numerical solution of compressible and incompressible unsteady flows in channel inspired by vocal tract

  1. 1.
    SYSNO ASEP0429316
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleNumerical solution of compressible and incompressible unsteady flows in channel inspired by vocal tract
    Author(s) Pořízková, P. (CZ)
    Kozel, Karel (UT-L) RID
    Horáček, Jaromír (UT-L) RID, ORCID
    Source TitleJournal of Computational and Applied Mathematics. - : Elsevier - ISSN 0377-0427
    Roč. 270, November (2014), s. 323-329
    Number of pages7 s.
    Publication formPrint - P
    Languageeng - English
    CountryNL - Netherlands
    Keywordscompressible ; incompressible ; unsteady ; CFD ; acoustic ; vocal tract
    Subject RIVBI - Acoustics
    R&D ProjectsGAP101/11/0207 GA ČR - Czech Science Foundation (CSF)
    GAP101/10/1329 GA ČR - Czech Science Foundation (CSF)
    Institutional supportUT-L - RVO:61388998
    UT WOS000337660100030
    EID SCOPUS84901195048
    DOI10.1016/j.cam.2013.12.045
    AnnotationThis study deals with the numerical solution of a 2D unsteady flow of a viscous fluid in a channel for low inlet airflow velocity. The unsteadiness of the flow is caused by a prescribed periodic motion of a part of the channel wall with large amplitudes, nearly closing the channel during oscillations. The channel is a simplified model of the glottal space in the human vocal tract. Four governing systems are considered to describe the unsteady laminar flow of a viscous fluid in the channel. The numerical solution is implemented using the finite volume method (FVM) and the predictor–corrector MacCormack scheme with artificial viscosity using a grid of quadrilateral cells. The unsteady grid of quadrilateral cells is considered in the form of conservation laws using the Arbitrary Lagrangian–Eulerian method. The numerical simulations of flow fields in the channel, acquired from a developed program, are presented for inlet velocity uˆ∞=4.12ms−1 and Reynolds number Re∞=4481 and the wall motion frequency 100 Hz.
    WorkplaceInstitute of Thermomechanics
    ContactMarie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823
    Year of Publishing2015
Number of the records: 1  

  This site uses cookies to make them easier to browse. Learn more about how we use cookies.