Numerical simulation of airflow through simplified vocal tract geometries relevant to speech production: preliminary results.

Airflow through the upper airways is a basic ingredient for human speech production. In real life, the airflow is subjected to complex initial and boundary conditions defined by upper airway geometry, tissue properties and airflow. In order to increase understanding, the current paper considers airflow through simplified geometries derived from ‘in-vivo’ rigid and steady upper airway configurations relevant to different articulation positions. The airflow is simulated using Large Eddy Simulation in order to take into account turbulence production. The Reynolds number is fixed to 4000 for all considered geometries.

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