Key result
Increasing the severity of stenosis in a 3D bifurcated artery model increases axial blood velocity and causes more flow recirculation downstream of the stenosis and along the daughter artery.
3D computational fluid dynamics modeling shows that increasing stenosis severity in bifurcated arteries leads to higher axial velocities and larger recirculation zones, which are hemodynamically linked to atherosclerosis progression.
Alerts to altered hemodynamics in stenotic bifurcations without clinical validation; leaves open contributions to lesion progression.
Numerical simulation of the behaviour of blood flow through a stenosed bifurcated artery with the presence of single mild stenosis at parent artery is investigated. The flow analysis applies the incompressible, steady, three-dimensional Navier-Stokes equations for non-Newtonian generalized power law fluids. Behaviour of blood flow is simulated numerically using COMSOL Multiphysics that based on finite element method. The results show the effect of severity of stenosis on flow characteristics such as axial velocity and its exhibit flow recirculation zone for analysis on streamlines pattern.
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Azahari et al. (2018) studied Stenosed bifurcated artery. Severity of stenosis (40%, 48%, 75%, and 87% occlusion) was evaluated on Flow characteristics (axial velocity and flow recirculation zone). Increasing the severity of stenosis in a 3D bifurcated artery model increases axial blood velocity and causes more flow recirculation downstream of the stenosis and along the daughter artery.
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