Abstract
Abstract Wall shear stress in an artery vessel or graft was studied by numerical simulation. The simulator takes into account the viscoelastic pulsatile deformation of vessel wall, the wall thickness, the vessel tapering. To investigate how geometrical and physical properties of an artery vessel or graft affect its hemodynamics (in particular, wall shear stress), five different sets of vessel/graft parameters were considered. It wasfound that wall shear stress is highly sensitive to changes in vessel lumen. Wall shear stress computed with a well-known expression (based on assumption of parabolic flow condition) and computed by the numerical simulator were then compared.
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