Incorporating vessel wall motion and non-Newtonian fluid dynamics is crucial for accurate modeling of arterial fluid mechanics, particularly regarding pressure gradients and wall shear stress in the aorta.
Models omitting aortic wall motion risk misestimating pressure gradients; leaves open translation to patient-specific hemodynamics and outcomes.
Most model studies of arterial fluid mechanics have assumed that blood is a Newtonian fluid and that vessel wall motion driven by the pressure pulse has a small influence on the local velocity and pressure distributions. This paper provides a brief historical review of arterial flow modeling which emphasizes recent developments in non-Newtonian blood analog fluids and studies of the influence of vessel wall motion on local flow fields. It is pointed out that vessel wall motion can have a dominant effect on mean pressure gradient and a significant effect on mean wall shear stress in the aorta.
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John M. Tarbell (1994) studied this question.
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