Abstract
Understanding blood flow in the circulatory system and how it affects intimal thickening is important with respect to atherogenesis and also for the design of vascular treatment devices such as stents and arterial grafts. While the assumption of Newtonian blood flow in large arteries is widely accepted by many investigators, questions remain unanswered for blood flow in the coronaries. In this study we investigate Non-Newtonian blood flow behavior in both the right and the left coronaries. We use a commercial code (FIDAP) to compare the Newtonian model to four Non-Newtonian models (Power law, Casson, Carreau and Quemada models) widely used in the literature. The coronary geometries were reconstructed from MRI images of human subjects. We found a significant difference in time average WSS between the power law and the Newtonian models. Also a difference in time average WSS is observed for the Quemada model. On the other hand, No significant difference is observed for the Newtonian, Casson and Carreau models.
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