Numerical approximation of flow in a symmetric channel with vibrating walls

0356958 - ÚT 2011 RIV CZ eng J - Journal Article
Sváček, P. - Horáček, Jaromír
Numerical approximation of flow in a symmetric channel with vibrating walls.
Applied and Computational Mechanics. Roč. 4, č. 2 (2010), s. 225-236. ISSN 1802-680X
R&D Projects: GA MŠMT OC09019
Institutional research plan: CEZ:AV0Z20760514
Keywords : biomechanics of voice production * incompressible Navier-Stokes equations * ALE method
Subject RIV: BI - Acoustics
http://www.kme.zcu.cz/acm/index.php/acm/article/view/62

In this paper the numerical solution of two dimensional fluid-structure interaction problem is addressed. The fluid motion is modelled by the incompressible unsteady Navier-Stokes equations. The spatial discretization by stabilized finite element method is used. The motion of the computational domain is treated with the aid of Arbitrary Lagrangian-Eulerian (ALE) method. The time-space problem is solved with the aid of multigrid method. The method is applied onto a problem of interaction of channel flow with moving wals, which models the air flow in the glottal region of the human vocal tract. The pressure boundary conditions and the effects of the isotropic and anisotropic mesh refinement are discussed. The numerical results are presented.
Permanent Link: http://hdl.handle.net/11104/0195339