Abstract
Three dimensional finite element analyses on the blood flows in vessels with stenosis and aneurysm have been achieved using various blood fluid models, such as Casson, Carreau-Yasuda, and Bi-Viscosity models. The results of these models are compared with the results of the Newtonian fluid to explore the non-Newtonian effect on the blood flow. Since the blood flows are pulsative, the flow rate varies with time. When the flow rate is high, the blood flow exhibits Newtonian-like behavior. On the other hand, for the low flow rate case, the difference between the results of the models becomes remarkable, and the blood flow no longer shows the Newtonian-like behavior.
