Advanced rheological models using the Carreau model demonstrate significant flow dampening and pressure drops in severe arterial stenosis, highlighting their importance for accurate arterial disease prediction.
Modeling of eccentric constrictions flags potential flow risks; leaves open clinical validation in patients.
This study analyzes blood flow hemodynamics within tilted ellipsoidal stenosed arteries. Modeling blood as a non-Newtonian fluid via the Carreau model, we evaluate the impact of zero shear rate viscosity and relaxation time on flow fields. Solutions obtained using the finite element method in COMSOL Multiphysics are validated against the Homotopy Perturbation Method. Simulations under severe pathological conditions (μ0 = 0.076 Pa·s) reveal critical flow dampening, with peak axial velocities of 0.14-0.22 m/s. This disturbed flow causes a substantial 15,400 Pa pressure drop. The findings highlight the necessity of advanced rheological models for accurate arterial disease prediction.
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Hussain et al. (2026) studied Stenosed arteries. Severe pathological conditions (μ0 = 0.076 Pa·s) was evaluated on Flow fields, peak axial velocities, and pressure drop.
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