Počet záznamů: 1  

Simulation of unsteady compressible flow in a channel with vibrating walls - Influence of the frequency

  1. 1.
    SYSNO ASEP0359140
    Druh ASEPJ - Článek v odborném periodiku
    Zařazení RIVJ - Článek v odborném periodiku
    Poddruh JČlánek ve WOS
    NázevSimulation of unsteady compressible flow in a channel with vibrating walls - Influence of the frequency
    Tvůrce(i) Punčochářová-Pořízková, P. (CZ)
    Kozel, K. (CZ)
    Horáček, Jaromír (UT-L) RID, ORCID
    Zdroj.dok.Computers & Fluids. - : Elsevier - ISSN 0045-7930
    Roč. 46, č. 1 (2011), s. 404-410
    Poč.str.7 s.
    Jazyk dok.eng - angličtina
    Země vyd.GB - Velká Británie
    Klíč. slovafinite volume method ; unsteady flow ; low Mach number ; viscous compressible fluid
    Vědní obor RIVBI - Akustika a kmity
    CEPOC09019 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy
    CEZAV0Z20760514 - UT-L (2005-2011)
    UT WOS000290834100060
    DOI10.1016/j.compfluid.2010.11.030
    AnotaceThis study deals with the numerical solution of a 2D unsteady flow of a compressible viscous fluid in a channel for flow 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 and the flow can represent a model of airflow coming from the trachea, through the glottal region with periodically vibrating vocal folds to the human vocal tract. The flow is described by the system of Navier-Stokes equations for laminar flows. The numerical solution is implemented using the finite volume method (FVM) and the predictor-corrector McCormack scheme with Jameson artificial viscosity using a gird of quadrilateral cells. Due to the motion of the gird, the basic system of conservation laws is considered in the Arbitrary Lagrangian-Eulerian (ALE) form. The numerical results for unsteady flows in the channel are presented for M=0,012, Re =4500 and the wall motion frequency 20 and 100Hz.
    PracovištěÚstav termomechaniky
    KontaktMarie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823
    Rok sběru2012
    Elektronická adresahttp://www.sciencedirect.com/science/article/pii/S0045793010003439
Počet záznamů: 1  

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