Modeling of non-Newtonian blood flow through a stenosed artery incorporating fluid-structure interaction

Abstract

We investigate fluid and structural responses to pulsatile non-Newtonian blood flow through a stenosed artery, using ANSYS. The artery was modeled as an axisymmetric stenosed vessel. The wall of the vessel was set to be isotropic and elastic. The blood behavior was described by the Power Law and the Carreau non-Newtonian models, respectively. When compared to the Newtonian flow models, the result from the Carreau model showed very little difference, in terms of velocity, pressure and wall shear stress, whereas the result from the Power Law model showed more significant vortices and smaller wall shear stresses. The highest stress concentration was also found at the throat of the stenosis.