Key result
Numerical simulation of blood flow in curved stenosed arteries showed that maximum wall shear stress occurs near the stenosis neck and increases with decreasing stenosis length.
Computational modeling demonstrates that non-Newtonian blood properties and stenosis geometry significantly impact wall shear stress and velocity profiles in curved arteries.
A numerical investigation of Newtonian/non-Newtonian unsteady pulsatile entry blood flow inside a 3D curved stenosed artery is presented. For considering the non-Newtonian effect (shear thinning or shear thickening behavior), the blood viscosity is characterized by the power-law model (Ostwald de Waele Equation). At the inlet of the artery, a realistic pulsatile waveform is utilized according to the experimental data reported by other researchers. This study belongs to the analysis of the curvature ratios, percentage and length ratio of stenosis, and blood thickening on hemodynamic characteristics of the flow. The results emphasize that the maximum wall shear stress happens near the stenosis neck and as expected, by decreasing the stenosis length, the maximum value of wall shear stress increases. In addition, the results indicate that the shear thickening fluid shows a more stable velocity profile rather than the shear thinning fluid flow.
No takes yet. Share an insight, caveat, or question.
Lakzian et al. (2019) studied Stenosed artery. Non-Newtonian blood flow (shear thinning or thickening) vs. Newtonian blood flow was evaluated on Hemodynamic characteristics (wall shear stress and velocity profile). Numerical simulation of blood flow in curved stenosed arteries showed that maximum wall shear stress occurs near the stenosis neck and increases with decreasing stenosis length.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: