Numerical tests of flow in human vocal tract

0350556 - ÚT 2011 RIV CZ eng C - Konferenční příspěvek (zahraniční konf.)
Pořízková, P. - Kozel, K. - Horáček, Jaromír
Numerical tests of flow in human vocal tract.
Interaction and Feedbacks 2010 - Proceedings. Prague: Institute of Thermomechanics AS CR, v.v.i, 2010 - (Zolotarev, I.), s. 79-86. ISBN 978-80-87012-29-1.
[Interaction and Feedbacks 2010 /17./. Prague (CZ), 23.11.2010-24.11.2010]
Grant CEP: GA MŠMT OC09019
Výzkumný záměr: CEZ:AV0Z20760514
Klíčová slova: finite volume method * biomechanics of voice * compressible Navier-Stokes equations
Kód oboru RIV: BI - Akustika a kmity

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 tract. The authors present several numerical tests of computational domain, of modified numerical scheme and types of mesh for the wall motion frequency 100 Hz.
Trvalý link: http://hdl.handle.net/11104/0190533