RT Journal Article ID 11368c1f79068873 A1 Banerjee, Moloy Kumar A1 Ganguly, Ranjan A1 Datta, Amitava T1 Variation of Wall Shear Stress and Flow Characteristics Across Cosine Shaped Stenotic Model with Flow Reynolds Number and Degree of Stenosis JF International Journal of Fluid Mechanics Research JO FMR YR 2010 FD 2011-01-30 VO 37 IS 6 SP 530 OP 552 AB 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. PB Begell House LK https://www.dl.begellhouse.com/journals/71cb29ca5b40f8f8,34053a9e69b46003,11368c1f79068873.html