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Numerical Simulations of Blood Flow in Artificial and Natural Hearts With Fluid–Structure Interaction
Author(s) -
Doyle Matthew G.,
Vergniaud JeanBaptiste,
Tavoularis Stavros,
Bourgault Yves
Publication year - 2008
Publication title -
artificial organs
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.684
H-Index - 76
eISSN - 1525-1594
pISSN - 0160-564X
DOI - 10.1111/j.1525-1594.2008.00644.x
Subject(s) - pulsatile flow , fluid–structure interaction , diaphragm (acoustics) , mechanics , fluid dynamics , flow (mathematics) , blood flow , current (fluid) , computer simulation , computer science , biomedical engineering , simulation , physics , engineering , acoustics , medicine , cardiology , finite element method , thermodynamics , loudspeaker
This article describes two ongoing numerical studies of fluid–structure interaction in the cardiovascular system: an idealized pulsatile ventricular assist device (VAD), consisting of two fluid chambers separated by a flexible diaphragm; and blood flow and heart wall motion during passive filling of a canine heart. Simulations have been performed for the VAD and compared with the results of a previous study and to our own preliminary experimental results. Detailed measurements of the flow field in the VAD model and additional simulations are in progress. Preliminary simulations using both an idealized model of the natural heart as well as a realistic model have identified the limitations of the current numerical methods in dealing with large three‐dimensional deformations. Ongoing research aims at extending the range of simulations to include large deformations and to incorporate an anisotropic material model for the heart wall to account for the muscle fibers.