COMPUTER SIMULATION OF BLOOD FLOW WITH COMPLIANT WALLS  ITC Software All rights reserved.

THE FLUID-STRUCTURE INTERACTION ALGORITHM (LOOSE COUPLING) CFD Solver Geometry of interface surfaces and velocity Load transfer INTERFACE Surface tracking Loads CSD Solver Information exchange for the coupled fluid-structure interaction problem

Finite element mesh for fluid domain of the carotid artery bifurcation Blood density  =1.05 g/cm 3 Kinematic viscosity =0.035 cm 2 /s R e =300

Finite element mesh for solid domain (shells) of the carotid artery bifurcation Young’s modulus E=3.61 x10 6 g/s 2 cm Density of wall  =1.1 g/cm 3 Thickness:common carotid cm distal segment internal carotid 0.022cm external carotid cm Geometrical non-linearity (Updated Lagrangian)

Velocity distribution for t/t p =0.1

Effective stress distribution at the carotid bifurcation walls, t/t p =0.325

Wall shear stress field at t/t p =0.1 (deformable walls)

Blood velocity field in the carotid artery bifurcation for t/t p =0.1

ANIMATION

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