Pulsatile Blood Flow Simulation in a Bifurcated Stenosed Artery Based on the Finite Element Method

This study presents a finite element analysis of pulsatile blood flow in a bifurcated artery with three stenosed configurations: parent artery only, parent with right daughter, and parent with both daughters. The unsteady Navier-Stokes equations were solved under physiological boundary conditions, considering both Newtonian and Non-Newtonian (Carreau) models. Validation ensured numerical accuracy. Results show that multiple stenoses intensify jet velocities, enlarge recirculation zones, and elevate hemodynamic disturbances, including WSS and OSI, with the most severe effects observed when all branches are stenosed. The Carreau model predicted reduced velocities, WSS, and OSI, highlighting shear-thinning effects compared to the Newtonian model.