Control volume analysis of laryngeal aerodynamics based on high-fidelity aeroelastic-aeroacoustic simulation with turbulence model

In this talk, a control volume analysis of laryngeal airflow is performed from high-fidelity aeroelastic-aeroacoustic simulations. The fully-coupled simulations use the immersed finite element method with slightly compressible fluid formulation to properly resolve acoustics and the Spalart-Allmaras turbulence model to account for subgrid turbulence. Vocal folds mimic the swept-ellipse multilayer rubber model used in coordinated experiments. Simulations were run for a range of subglottal pressures. Terms of the Integral equations for momentum and mechanical energy are computed in the laryngeal control volume to estimate the acoustic source strength and energy utilization in phonation.