Flow-field Measurements in a Self-Oscillating In Vitro Model of the Vocal Folds

Adam G. Apostoli (1) , Murray Campbell (1) , Clive A. Greated (1)

1 SUPA School of Physics and Astronomy [Edinburgh]

Within the larynx, complex soft tissue structures are caused to oscillate periodically by an airflow generated by an overpressure in the lungs. One of the difficulties encountered when studying the oscillation of the vocal folds is the inaccessibility of the human larynx. This paper describes a study using an in-vitro model of the vocal folds constructed from latex and water, which replicates basic features of the fluid-structure interactions that take place in the human larynx. Particle Image Velocimetry (PIV) is used to gather full flow-field measurements downstream of the model vocal folds at defined phase points in the phonatory cycle. An important development of this work is the use of an optically transparent in vitro model, which allows for measurements of the speeds and vortical structures of the jet emerging from the vocal folds.

Mots clés: Particle Image Velocimetry (PIV); Self-oscillating; In-vitro model; Vocal folds

Domaines: Acoustique [physics.class-ph]; Acoustique [physics.class-ph]

Adam G. Apostoli, Murray Campbell, Clive A. Greated. Flow-field Measurements in a Self-Oscillating In Vitro Model of the Vocal Folds. 10ème Congrès Français d'Acoustique, Apr 2010, Lyon, France. ⟨hal-00539756⟩