Eunison

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WP2 - Simulation of phonation

The objective of this WP is to develop a finite element fluid-structure interaction (FSI) model of the larynx, including the vocal folds and its surrounding structures, to simulate phonation. The model will be robust and allow for the simulation of both laminar and turbulent incompressible flow, and full contact between the oscillating vocal folds. The implementation will be efficient and designed for high performance computing architectures, for which we will use the DOLFIN/Unicorn software framework with demonstrated high parallel efficiency. The G2/UC-FSI larynx model (see 1.3.2) will be designed to mimic the synthetic model developed in WP3, and the simulation model will be validated against measurements in WP3 (T2.1). A contact model for vocal fold collision will be developed, and the simulation model including contact will be validated against the experimental measurements carried out in WP3 (T2.2). The simulation model will be designed to allow for easy modification of the structure geometry and data, to open for coupling of the vocal folds model to muscle activation models developed in WP7 (T2.3). Basic model problems of phonation will be simulated to generate input data to the acoustic models developed in WP5 and WP4, and the model should allow for a combination of passive FSI and an actively deforming structural domain using an ALE method, to open for the grand unification of models in WP4 (T2.4).