Speaker
Description
This work presents a hybrid computational framework for the three-dimensional simulation of human phonation, combining prescribed vocal fold motion, computational fluid dynamics, and aeroacoustic wave propagation. The adopted kinematic mucosal wave model is derived from laboratory experiments of soft phonation, and its kinematics are imposed as dynamic boundary conditions in the incompressible Navier–Stokes solver. OpenFOAM is employed due to its high performance, open-source availability, and extensive capabilities, including advanced turbulence modeling and dynamic mesh functionality. The aeroacoustic model is based on the aeroacoustic wave equation, with preprocessing consisting of the conservative projection of sound sources from the CFD mesh onto the acoustic mesh, followed by wave propagation simulated with the program openCFS.This approach enables controlled investigation of flow-induced sound generation while providing significant computational savings compared to fully coupled fluid–structure interaction simulations. The influence of flow dynamics on acoustic source terms is analyzed, and numerical simulations of sound propagation in a simplified vocal tract geometry are presented.