Fifth International Workshop on Models and Analysis of Vocal Emissions for Biomedical Applications (MAVEBA 2007)

Florence, Italy
December 13-15, 2007

Numerical Simulation of Airflow Through the Oscillating Glottis

P. Punčochářová (1), Jaromír Horáček (2), K. Kozel (2), J. Fürst (1)

(1) Department of Technical Mathematics, Faculty of Mechanical Engineering, Czech Technical University in Prague, Czech Republic
(2) Institute of Thermomechanics, Academy of Sciences of the Czech Republic, Czech Republic

The work deals with the numerical solution of 2D unsteady compressible viscous flows in a symmetric channel for a 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 the oscillations. The flow in the channel can represent a simplified model of airflow coming from the trachea, through the glottal region with periodically vibrating vocal folds to the human vocal tract.
Index Terms. Navier-Stokes equations, unsteady compressible viscous flow, FVM, ALE method, CFD.

Full Paper (reprinted with permission from Firenze University Press)

Bibliographic reference.  Punčochářová, P. / Horáček, Jaromír / Kozel, K. / Fürst, J. (2007): "Numerical simulation of airflow through the oscillating glottis", In MAVEBA-2007, 55-58.