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Study of Compliance Mismatch within a Stented Artery
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Study of Compliance Mismatch within a Stented Artery

Kefu Liu and Gianmarc Coppola, Lakehead University

The objective of this paper is to study the effects of compliance mismatch in a stented artery. COMSOL Multiphysics is used to tackle this challenging problem involving fluid-structure interaction.

The particular effects studied in this paper are the radial displacement of the artery wall, pressure distribution along the studied segment, the factors affecting stress in the fluid and artery wall, vorticity, etc. The attention is focused on abnormal behaviors near the proximity of the stented portion. It is found that a greater compliance mismatch increases the perturbation of the hemodynamics and structural mechanics of the wall.

The stented artery fluid-structure interaction is taken into account within COMSOL by coupling the structural mechanics of the wall and fluid dynamics of the blood, then simultaneously solving the system.

User Comments

Juan Anza
Jan 7, 2010 at 2:48pm UTC

It does not converge on Comsol 3.5a

It reports:

46 0.24637 0.016 152 38 152 1 4 2
Warning: Inverted mesh element near coordinates (0.00327295, 0.10207)
Warning: Inverted mesh element near coordinates (1.12763e-026, 0.049588)
Warning: Inverted mesh element near coordinates (1.40521e-017, 0.107194)
46 0.24637 0.016 out 185 48 185 1 4 12

Error:
Time 0.2463735351562501:
Nonlinear solver did not converge.
Last time step is not converged.

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