Abstract
A numerical simulation is carried out to investigate the effect of time period of pulsation on the flow behavior through an arterial stenosis. A semicircular eccentric stenosis is considered which is more relevant in cardiovascular system rather than symmetric one. The degree of stenosis has been considered as 50%.The Reynolds number is varied from 200 to 970 during the pulsation while the Womersley number has been kept fixed at 7.122 for the time period 0.7s. Results show significant variation of flow behavior due to the variation of pulsatile flow wave forms. Moreover vortex rings are developed asymmetrically and the post stenotic areas are severely affected by the vortex rings and a significant variation of wall shear stress has been observed.
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