Fluid structure interaction in fully collapsible tubes

0361206 - ÚT 2012 RIV US eng C - Conference Paper (international conference)
Maršík, František - Štembera, V. - Chlup, Hynek - Hemza, J.
Fluid structure interaction in fully collapsible tubes.
8th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics HEFAT2011. Leonia, NJ 07605: EDAS Conference Services, 2011 - (Meyer, J.), s. 553-566. ISBN 978-1-86854-948-1.
[International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics /8./ HEFAT2011. Pointe Aux Piments (MU), 11.07.2011-13.07.2011]
R&D Projects: GA MŠMT(CZ) 1M06031; GA ČR(CZ) GA106/08/0557
Institutional research plan: CEZ:AV0Z20760514
Keywords : biomechanical collapse conditions * bridging veins * modeling of blood vessels
Subject RIV: BK - Fluid Dynamics

The mixed formulation of the finite element method with the separately interpolated pressure is used for the structure. The strong coupling of both structure and fluid solvers allow us to simulate self-induced large deflection oscillations of the tube. Provided that, the Neo-Hook’s material model was applied the analytical formula for the collapse conditions was found. It was proved that for the brain vein contraction about 5%, the vein collapse can occurs even under normal physiological condition – the angiosynizesis. The fluid structure interaction is studied experimentally on the special experimental line.
Permanent Link: http://hdl.handle.net/11104/0198577