A false transient approach to steady state solution of fluid flow through vascular constrictions

Abstract

Steady state laminar fluid flow through double vascular constrictions was studied numerically. A false transient model was proposed and used with a mesh transformation technique for the modelled double vascular constrictions. The numerical model was used to study the streamlines, velocity and vorticity distributions as the flow passes through double constrictions in a vascular tube. For double vascular constrictions of spacing ratio S/D=1, 2, 3 and ∞ with a 50% diameter constriction, a Reynolds number range of 5 to 200 was studied. Comparisons were also made with the available data from other investigators. © 1991 Springer-Verlag.