Why the study?
Does non-Newtonian blood flow simulation differ from Newtonian simulation in an idealized arterial bifurcation model with a saccular aneurysm?
Does non-Newtonian blood flow simulation differ from Newtonian simulation in an idealized arterial bifurcation model with a saccular aneurysm?
Computational simulation demonstrates that assuming Newtonian blood flow is sufficient for modeling large arteries with saccular aneurysms under physiological conditions.
Supports Newtonian assumption in large-artery aneurysm CFD; leaves open non-Newtonian relevance in smaller vessels or altered flows.
Blood flow is analysed by means of computer simulation in an idealized arterial bifurcation model which is pathologically altered by a saccular aneurysm. The theoretical study of the flow pattern and the paths of fluid particles is carried out under pulsatile Newtonian and non-Newtonian flow conditions. The governing equations are solved numerically with the use of the finite element method. The results show the disturbed blood flow in the bifurcation and the relatively low intra-aneurysmal flow circulation. In addition to the study of basic flow patterns in the segment, a comparison of non-Newtonian and Newtonian results is carried out. This comparison proves that for the considered large artery model under physiological flow conditions where the yield number is relatively low there is no essential difference in the results.
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Perktold et al. (1989) studied this question.
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