A numerical investigation is carried out for laminar sinusoidal pulsating flow through a modeled arterial stenosis with a
trapezoidal profile up to peak Reynolds number of 1000. Finite element based numerical technique is used to solve the
fluid flow governing equations where the fluid is assumed to be viscous, incompressible and Newtonian. The effects of
pulsation, stenosis severity, Reynolds number and Womersley number on the flow behavior are studied. The dynamic
nature of pulsating flow disturbs the radial velocity distribution and thus generates recirculation zone in the poststenotic
region. The peak wall shear stress develops for 65% stenosis (by area) is 3, 2.2, and 1.3 times higher than that
for 30%, 45%, and 55% stenosis, respectively. Peak wall shear stress and wall vorticity appear to intense at the throat of
the stenosis. It is also observed that the peak wall vorticity seems to increase with the increase of stenosis size and
Reynolds number. However, the peak values of instantaneous wall vorticity are not greatly affected by the variation of
Womersley number
