Non-Newtonian Hemodynamics and Shear Stress Distribution in Three Dimensional Model of Healthy and Stented Coronary Artery Bifurcation
In this paper, a three-dimensional model of the coronary artery bifurcation is developed and physiological flow in the both healthy and stented coronary artery bifurcation is modeled using COMSOL Multiphysics. Wall shear stress induced by endovascular stents in the coronary artery bifurcation is analyzed considering both non- Newtonian and Newtonian flow models.
Our simulations shows that the presence of stent within the bifurcation induces local disturbance in the flow field and consequently produces regions of low WSS in the main and daughter vessels. However, the distribution of WSS is non-uniform around the stented regions downstream of the bifurcation. The WSS distribution in the vicinity of stent struts for non-Newtonian model is significantly different compared to the usually assumed Newtonian flow condition.
Herunterladen
- molavi_paper.pdf - 0.53MB