Journal
MEDICAL ENGINEERING & PHYSICS
Volume 31, Issue 8, Pages 986-993Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.medengphy.2009.05.012
Keywords
Bileaflet prosthetic valve; Fluid-structure interaction; Particle image velocimetry
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A numerical 3-D fluid-structure interaction (FSI) model of a prosthetic aortic valve was developed, based on a commercial computational fluid dynamics (CFD) software program using an Arbitrary Eulerian Lagrangian (ALE) formulation. To make sure of the validity of this numerical model, an equivalent experimental model accounting for both the geometrical features and the hydrodynamic conditions was also developed. The leaflet and the flow behaviours around the bileaflet valve were investigated numerically and experimentally by performing particle image velocimetry (PIV) measurements. Through quantitative and qualitative comparisons, it was shown that the leaflet behaviour and the velocity fields were similar in both models. The present study allows the validation of a fully coupled 3-D FSI numerical model. The promising numerical tool could be therefore used to investigate clinical issues involving the aortic valve. (C) 2009 IPEM. Published by Elsevier Ltd. All rights reserved
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