%0 Journal Article %A Banerjee, Moloy Kumar %A Ganguly, Ranjan %A Datta, Amitava %D 2010 %I Begell House %N 6 %P 530-552 %R 10.1615/InterJFluidMechRes.v37.i6.30 %T Variation of Wall Shear Stress and Flow Characteristics Across Cosine Shaped Stenotic Model with Flow Reynolds Number and Degree of Stenosis %U https://www.dl.begellhouse.com/journals/71cb29ca5b40f8f8,34053a9e69b46003,11368c1f79068873.html %V 37 %X A numerical analysis has been carried out to investigate the hemodynamic flow through stenosed arteries having mild (S = 25 %) to severe (S = 65 %) occlusions and under different regimes of flow Reynolds numbers ranging from 50 to 400, considering laminar flow and modeling blood as both Newtonian and non-Newtonian fluid. Reattachment point, wall shear stress, and it's physiological aspects have been studied in detail. From the study, it is revealed that for all the cases a sharp variation in dimensionless wall shear stress (WSS) is observed near the zone of restriction. The maximum value of this peak WSS in the stenosed region is more sensitive to a change in the degree of occlusion rather than change in the flow Re. Atherosclerotic plaque formation tends to start from very low flow Reynolds number of 50 with 50 % restriction. For Reynolds numbers of 200 and above, it starts at 25 % stenosed condition. %8 2011-01-30