Počet záznamů: 1
Numerical simulation of unsteady compressible low Mach number flow in a channel
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SYSNO ASEP 0348198 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Ostatní články Název Numerical simulation of unsteady compressible low Mach number flow in a channel Tvůrce(i) Punčochářová-Pořízková, P. (CZ)
Kozel, Karel (UT-L) RID
Horáček, Jaromír (UT-L) RID, ORCID
Fürst, J. (CZ)Zdroj.dok. Engineering Mechanics. - : Association for Engineering Mechanics - ISSN 1802-1484
Roč. 17, č. 2 (2010), s. 83-97Poč.str. 15 s. Jazyk dok. eng - angličtina Země vyd. CZ - Česká republika Klíč. slova CFD ; finite volume method ; unsteady flow ; low Mach number Vědní obor RIV BI - Akustika a kmity CEP OC09019 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy CEZ AV0Z20760514 - UT-L (2005-2011) Anotace This study deals with the numerical solution of a 2D unsteady flow of a compressible 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 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 eq. for laminar flows. The numerical solution is implemented using the FVM and the predictor-corrector MacCormak 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 ALE form. Pracoviště Ústav termomechaniky Kontakt Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Rok sběru 2011
Počet záznamů: 1