Numerical computation and comparison of low Mach number flow in a channel

0356792 - ÚT 2012 RIV CZ eng C - Conference Paper (international conference)
Pořízková, P. - Kozel, K. - Horáček, Jaromír
Numerical computation and comparison of low Mach number flow in a channel.
Conference Topical Problems of Fluid Mechanics 2011. Prague: Institute of Thermomechanics AS CR, v. v. i., 2011 - (Příhoda, J.; Kozel, K.), s. 97-100. ISBN 978-80-87012-32-1.
[Topical problems of fluid mechanics 2011. Prague (CZ), 16.02.2011-17.02.2011]
R&D Projects: GA ČR(CZ) GAP101/11/0207
Institutional research plan: CEZ:AV0Z20760514
Keywords : finite volume method * unsteady Navier-Stokes equations * biomechanics of voice
Subject RIV: BI - Acoustics

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 unsteady numerical solutions of flow in two similar computational domains. The numerical results are presented for inlet Mach number MĄ = 0.012, Reynolds number Re = 4481 and the wall motion frequency 100 Hz.
Permanent Link: http://hdl.handle.net/11104/0195222