Original title: Coherent turbulent structures in flow through the human vocal tract
Authors: Šidlof, Petr ; Doaré, O. ; Cadot, O. ; Čejka, J.
Document type: Papers
Conference/Event: Experimental Fluid Mechanics 2010, Liberec (CZ), 2010-11-24 / 2010-11-26
Year: 2010
Language: eng
Abstract: This paper presents experimental and computational data on the coherent turbulent structures in flow through the human vocal tract. The experimental results were obtained using a 4:1 scaled self-oscillating physical model of vocal folds. Flow velocity fields in the coronal plane were visualized and measured using a PIV system phase-synchronized with vocal fold vibration. Computational results originate from finite volume discretizations of viscous incompressible Navier-Stokes equations in 2D and 3D. The results reveal flow separation in the divergent part of glottis and formation of a planar jet. Vortex structures are shed from the shear layer of the jet and convected further downstream. The computational model helps to assess the influence of the ventricular folds on the flow patterns.
Keywords: airflow; PIV; vocal folds
Project no.: CEZ:AV0Z20760514 (CEP), KJB200760801 (CEP)
Funding provider: GA AV ČR
Host item entry: Experimental Fluid Mechanics 2010 - Conference Proceedings, ISBN 978-80-7372-670-6

Institution: Institute of Thermomechanics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0192566

Permalink: http://www.nusl.cz/ntk/nusl-42311


The record appears in these collections:
Research > Institutes ASCR > Institute of Thermomechanics
Conference materials > Papers