Počet záznamů: 1
Numerical simulation of unsteady low-Mach number viscous flow in a channel
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SYSNO ASEP 0332476 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV D - Článek ve sborníku Název Numerical simulation of unsteady low-Mach number viscous flow in a channel Tvůrce(i) Punčochářová, P. (CZ)
Kozel, Karel (UT-L) RID
Horáček, Jaromír (UT-L) RID, ORCID
Fürst, J. (CZ)Zdroj.dok. Proceedings Interaction and Feedbacks 2009. - Praha : Ústav termomechaniky AV ČR, v. v. i., 2009 / Zolotarev I. - ISBN 978-80-87012-23-9 Rozsah stran s. 39-46 Poč.str. 8 s. Akce Interaction and Feedbacks 2009 Datum konání 24.11.2009-25.11.2009 Místo konání Praha Země CZ - Česká republika Typ akce EUR Jazyk dok. eng - angličtina Země vyd. CZ - Česká republika Klíč. slova biomechanics of voice ; finite volume method ; airflow of vocal tract Vědní obor RIV BI - Akustika a kmity CEP IAA200760613 GA AV ČR - Akademie věd CEZ AV0Z20760514 - UT-L (2005-2011) Anotace This study deals with a 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 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 a system of Navier-Stokes equations for laminar flows. The numerical solution is implemented using a grid of quadrilateral cells. Due the motion of the grid, the basic equations are considered in the Arbitrary Lagrangian-Eulerian form. Numerical results are presented for Mach number 0,012m, Reynolds number 5000 and vibration frequency 100 Hz. 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 2010
Počet záznamů: 1