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Fluid-Structure Interaction in Bi-Leaflet Mechanical Heart Valves

[+] Author Affiliations
Iman Borazjani, Liang Ge, Fotis Sotiropoulos

University of Minnesota, Minneapolis, MN

Lakshmi Prasad Dasi, Ajit Yogonathan

Georgia Institute of Technology, Atlanta, GA

Paper No. BioMed2007-38074, pp. 17-18; 2 pages
doi:10.1115/BioMed2007-38074
From:
  • ASME 2007 2nd Frontiers in Biomedical Devices Conference
  • ASME 2007 2nd Frontiers in Biomedical Devices
  • Irvine, California, USA, June 7–8, 2007
  • Conference Sponsors: Nanotechnology Institute
  • ISBN: 0-7918-4266-5 | eISBN: 0-7918-3797-1
  • Copyright © 2007 by ASME

abstract

In this work we focus on the fluid-structure interaction (FSI) problem of a St. Jude Regent 23mm bi-leaflet mechanical heart valve (BMHV) implanted in modeled straight aorta geometry with a simplified sinus. A FSI solver based on a recently developed curvilinear grid/immersed boundary method fluid flow solver is developed. The current numerical simulation focuses on the acceleration phase within the cardiac cycle when the leaflets are opening following the incoming flow. The simulated results are compared with experimental data with regard to the leaflet kinematics as well as valve induced wake vortical structures and excellent agreement between the simulation and measurements is reported.

Copyright © 2007 by ASME

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