Mathematical modelling of human phonation process

Abstract: In this talk the fluid-structure-acoustic interaction (FSAI) problem with a particular interest in application on the problem of human phonation is addressed. This problem consists of the three physical fields: a highly complex airflow, a vibrating elastic structure (vocal folds) and acoustics and their mutual interactions. The general mathematical model of FSAI problem will be described and the later simplifications of it will be discussed. Since the main sound source of the human phonation is generated by an unsteady flow in the complex configuration of vocal tract the aeroacoustics as a separate branch of acoustics will be introduced. The ultimate goal of the aeroacoustics is to establish a well solvable simplification of the full description provided by the Navier-Stokes equations (for compressible fluid). Due to recent advantages the computational aeroacoustics has attained also a high interest in the field of technical applications. In the end the numerical simulations of flow-induced vibrations of vocal folds and the propagation of sound through human vocal tract based on the previously mentioned approaches will be shown.

MathematicsPhysics

Audience: researchers in the topic

Nečas Seminar on Continuum Mechanics

Series comments: This seminar was founded on December 14, 1966.

Faculty of Mathematics and Physics, Charles University, Sokolovská 83, Prague 8. If not written otherwise, we will meet on Mondays at 15:40 in lecture hall K3 (2nd floor)