Blood flow in small curved tubes is modeled by the two-fluid model where a relatively cell-free fluid layer envelops a fluid core of higher viscosity. The parameters in the model are successfully curve fitted to experimental data for straight tubes. The curved tube equations are then solved by perturbation theory. It was found that curvature in general lowers the tube resistance, but increases the shear stress near the inside wall.
Issue Section:Technical Briefs
Keywords:haemorheology, haemodynamics, viscosity, physiological models, pipe flow, perturbation theory
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