The basis of the human phonation process is given by complex interaction of air flow in the larynx together with structural mechanics of the vocal folds. This paper presents a numerical scheme to model the fluid-solid interaction in the human larynx and its resulting acoustic sound. The scheme is utilised to simulated the phonation process in a 2D-model. Different geometries of the vocal folds have been used to analyse the effect on the fluid field, the vibration of the vocal folds and the sound generation. The results show the self sustained oscillation of the vocal folds and resolve the Coanda effect.

Index Terms. human phonation, fluid-structure interaction, aeroacoustic, finite element method