Journal of Artificial Organs

, Volume 10, Issue 2, pp 96–103 | Cite as

Transient fluid–structure coupling for simulation of a trileaflet heart valve using weak coupling

  • Yos S. Morsi
  • William W. Yang
  • Cynthia S. Wong
  • Subrat Das


In this article, a three-dimensional transient numerical approach coupled with fluid–structure interaction for the modeling of an aortic trileaflet heart valve at the initial opening stage is presented. An arbitrary Lagrangian–Eulerian kinematical description together with an appropriate fluid grid was used for the coupling strategy with the structural domain. The fluid dynamics and the structure aspects of the problem were analyzed for various Reynolds numbers and times. The fluid flow predictions indicated that at the initial leaflet opening stage a circulation zone was formed immediately downstream of the leaflet tip and propagated outward as time increased. Moreover, the maximum wall shear stress in the vertical direction of the leaflet was found to be located near the bottom of the leaflet, and its value decreased sharply toward the tip. In the horizontal cross section of the leaflet, the maximum wall shear stresses were found to be located near the sides of the leaflet.

Key words

Trileaflet heart valve Computational fluid dynamics Fluid–structure interaction Arbitrary Lagrangian–Eulerian method Wall shear stress 


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Copyright information

© The Japanese Society for Artificial Organs 2007

Authors and Affiliations

  • Yos S. Morsi
    • 1
  • William W. Yang
    • 2
  • Cynthia S. Wong
    • 1
  • Subrat Das
    • 1
  1. 1.Biomechanics and Tissue Engineering Group, Industrial Research Institute IRISSwinburne University of TechnologyHawthornAustralia
  2. 2.Division of MineralsCommonwealth Scientific and Industrial Research OrganisationClaytonAustralia

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