Velocity distribution along an elastic model of human arterial tree
| Autor: | Régis Rieu, Robert Pelissier, A. Friggi |
|---|---|
| Rok vydání: | 1985 |
| Předmět: |
Aortic arch
Systole Quantitative Biology::Tissues and Organs Physics::Medical Physics Biomedical Engineering Biophysics Geometry Physics::Fluid Dynamics Diastole medicine.artery medicine Humans Orthopedics and Sports Medicine Bifurcation Physics Aorta Rehabilitation Models Cardiovascular Arteries Vorticity Velocimetry Elasticity Arterial tree Ball valve Descending aorta cardiovascular system Rheology Blood Flow Velocity |
| Zdroj: | Journal of Biomechanics. 18:703-715 |
| ISSN: | 0021-9290 |
| DOI: | 10.1016/0021-9290(85)90025-9 |
| Popis: | An experimental investigation of an elastic model of the human arterial tree, has been performed for physiological type flow by pulsed Doppler ultrasonic velocimetry. The arterial tree model, fabricated in clear polyurethane, includes the aortic arch, with a Starr-Edwards ball valve mounted in the root of the aorta, the descending aorta and the iliac bifurcation. Our study showed that the velocity profile, a few centimeters beyond the valve, is skewed, with higher velocities towards the top and the inner wall (anatomically the posterior and left lateral wall). An inward shift of the maximum velocity and reverse flow are denoted along the inner wall of the aortic arch. The velocity profiles in the descending aorta are blunted. Downstream from the vertex of the iliac bifurcation, there is vorticity creation, but the branching effect is quickly damped by the pulsatility of the flow and the elasticity of the wall. |
| Databáze: | OpenAIRE |
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