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

Florence, Italy
December 13-15, 2007

PIV Measurements of Velocity Fields in Glottis on a Physical Vocal Fold Model

P. Šidlof (1), Olivier Doaré (2), Olivier Cadot (2), Antoine Chaigne (2), Jaromír Horáček (1)

(1) Institute of Thermomechanics, Academy of Sciences of the Czech Republic, Prague, Czech Republic
(2) Ecole Nationale Supérieure de Techniques Avancées, Paris, France

The velocity fields along a selfvibrating physical model of vocal folds were studied experimentally. The shape of the vocal folds was specified according to data measured on excised human larynges in phonation position. The model was fabricated in 1:4 scale as a silicone body vibrating in the wall of a plexiglass wind tunnel. The model is not excited externally and oscillates only due to coupling with the flow. In addition to acoustic, subglottal pressure and impact intensity measurements, flow velocity fields were recorded in the coronal plane using particle image velocimetry, in the domain immediately above glottis. Analysis of the PIV images taken within 25 phases of one vibration cycle gives good insight into the dynamics of the supraglottal flow.
Index Terms. glottal flow, physical model, PIV

Full Paper (reprinted with permission from Firenze University Press)

Bibliographic reference.  Šidlof, P. / Doaré, Olivier / Cadot, Olivier / Chaigne, Antoine / Horáček, Jaromír (2007): "PIV measurements of velocity fields in glottis on a physical vocal fold model", In MAVEBA-2007, 177-180.