Velocity distribution along an elastic model of human arterial tree
Identifieur interne : 005171 ( Main/Exploration ); précédent : 005170; suivant : 005172Velocity distribution along an elastic model of human arterial tree
Auteurs : Regis Rieu [France] ; Alain Friggi [France] ; Robert Pelissier [France]Source :
- Journal of Biomechanics [ 0021-9290 ] ; 1984.
Abstract
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.
Url:
DOI: 10.1016/0021-9290(85)90025-9
Affiliations:
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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.</div></front></TEI><affiliations><list><country><li>France</li></country><region><li>Provence-Alpes-Côte d'Azur</li></region><settlement><li>Marseille</li></settlement></list><tree><country name="France"><region name="Provence-Alpes-Côte d'Azur"><name sortKey="Rieu, Regis" sort="Rieu, Regis" uniqKey="Rieu R" first="Regis" last="Rieu">Regis Rieu</name></region><name sortKey="Friggi, Alain" sort="Friggi, Alain" uniqKey="Friggi A" first="Alain" last="Friggi">Alain Friggi</name><name sortKey="Pelissier, Robert" sort="Pelissier, Robert" uniqKey="Pelissier R" first="Robert" last="Pelissier">Robert Pelissier</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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