ALE space-time discontinuous Galerkin method for the interaction of compressible flow with linear and nonlinear dynamic eleasticity and applications to vocal fold vibrations

Abstrakt

The paper deals with the discontinuous Galerkin method (DGM) for the solution of compressibleNavier-Stokes equations in the ALE formin time-dependent domains combined with the solution of linear and nonlinear dynamic elasticity. The developed methods are oriented to fluid-structure interaction (FSI), particularly to the simulation of air flow in a time-dependent domain representing vocal tract and vocal folds vibrations.

We compare results obtained with the aid of linear and nonlinear elasticity models. The results show that it is more adequate to use the nonlinear elasticity St.

Venant-Kirchhoff model in contrast to the linear elasticity model.

Klíčová slova

• ALE- space-time
• discontinuous Galerkin method
• compressible flow
• dynamic eleasticity
• applications
• vocal fold vibrations