ACOUSTICS2008/3578 Coupled 2D-Fluid-Structure-Acoustic Simulation of the Human Voice
Gerhard Link, Manfred Kaltenbacher, Michael Doellinger, Reinhard Lerch · 2008
caused by a disease. There exist dierent approaches to improve therapies. Experimental field studies of dierent physical parameters, like acoustic pressure or vocal fold displacements are one possibility. Another promising approach to advance insight into laryngeal dynamics is given by numerical simulations. Due to the growing computing power the complexity of numerical phonation models is steadily increasing and full fluid-structure-acoustic interacting models are now feasible. Therefore, we have developed a two-dimensional numerical model for the human phonation process, which includes the complete fluid-structure-acoustic interaction. As discretization method the finite-element method was applied for all possible three physical fields. The fluid-structure and the structure-acoustic interactions are based on general continuum mechanical principles; the fluid-acoustic interaction is based on Lighthill’s acoustic analogy. Therewith, the analysis of all sound mechanisms, which consist of the eddy-induced, the volume-induced, and the mechanical-induced sound can be performed. First simulation results will be presented and discussed.