What question did this study set out to answer?

This study aims to explore the behavior of pulsatile flows in models simulating abdominal aortic aneurysms and their impact on flow patterns.

June 1, 1989Biorheology

Visualization and finite element analysis of pulsatile flow in models of the abdominal aortic aneurysm

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Randomized trial investigates pulsatile flow dynamics in abdominal aortic aneurysm models, highlighting flow patterns and vortex formation.

This study aims to explore the behavior of pulsatile flows in models simulating abdominal aortic aneurysms and their impact on flow patterns.
Flow visualization conducted with glass models imitating fusiform and lateral saccular aneurysms.
Finite element analysis performed to calculate velocity and pressure fields in pulsatile flow.
Experiments compared instantaneous patterns of flow with the theoretical calculations maintaining Reynolds number and Womersley's parameter.
Vortex formation occurred as flow separated from the proximal wall of the aneurysm, transitioning to turbulence at higher flow rates.
Instantaneous velocity patterns from finite element analysis matched well with experimental observations.
Wall shear stress showed significant variation, with extremes occurring just upstream and downstream of the aneurysm expansion.

Fukushima et al. (1989) studied this question.

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Randomized trial investigates pulsatile flow dynamics in abdominal aortic aneurysm models, highlighting flow patterns and vortex formation.