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Methods of Computational Fluid Dynamics are applied to simulate pulsatileblood flow in human vessels and in the aortic arch. The non-Newtonian behaviourof the human blood is investigated in simple vessels of actual size. A detailedtime-dependent mathematical convergence test has been carried out. Therealistic pulsatile flow is used in all simulations. Results of computersimulations of the blood flow in vessels of two different geometries arepresented. For pressure, strain rate and velocity component distributions wefound significant disagreements between our results obtained with realisticnon-Newtonian treatment of human blood and widely used method in literature: asimple Newtonian approximation. A significant increase of the strain rate and,as a result, wall sear stress distribution, is found in the region of theaortic arch. We consider this result as theoretical evidence that supportsexisting clinical observations and those models not using non-Newtoniantreatment underestimate the risk of disruption to the human vascular system.

3D Computer Simulations of Pulsatile Human Blood Flows in Vessels and in  the Aortic Arch: Investigation of Non-Newtonian Characteristics of Human  Blood