The heart simulator must deal with the fluid-structure
interaction problem, in which the dynamics of blood flow (governed by the
Navier-Stokes equations) and viscoelastic materials (such as myocardium
and valves) affect each other. From the continuum mechanics point of view,
there is no distinction between fluids and viscoelastic materials, as both
are governed by mass and momentum conservation laws. However, their dynamics
are totally different due to the differences in constitutive laws (stress-strain-strain
rate relations), which makes the fluid-structure interaction analysis difficult.
To overcome this difficulty we adopt different approaches for the interaction
between ventricle/atrium and blood and between valves and blood.
Introduction of Research
Computational Science 2/4
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