Computation of Wall Shear Stresses Across Various Stenosis Length in Common Carotid Artery

Abstract

The main focus of this article is specified on laminar flow simulation in large stenosed arteries is in which the important factor of wall shear stresses is explored across various stenosis length ratio (L/D) varied from 10 to 40.The results of various stenosis lengths are compared with various degrees of stenosis (d/D) ranging from 20% to 80% at different Reynold numbers i.e. Re = 500 and Re =1000. The computational simulation is carried out under axisymmetric steady laminar flow on stenosis ranging from 20% to 80% at selected Re numbers of 500 and 1000. The effects of Reynold numbers on shear stresses and also stenosis length on wall shear rate are highlighted in details. To avoid from any divergence, numerical calculations are performed up to Reynolds number of 1000. Semi Implicit pressure correction Scheme and Finite Element Method (FEM) is used to solve the Navier-Stokes equations for viscous flow.