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The present paper brings new lights on blood flow patterns in rigid artery bifurcation models, differing in angle of bifurcation. Using the ANSYS 5.4/FLOTRAN package, a numerical analysis in two dimensions was performed, under physiologically relevant flow conditions. For two bifurcation models, one with large angle the other with a small one, the distributions of velocities, shear-stress and pressure in the domain of carotid artery bifurcation have been obtained. It is argued and proved that the vascular geometry at the bifurcation level represents a risk factor in atherogenesis, the relevant factors for this process being the flow separation, reversal flow regions and wall shear stress.
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Tom
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759--772
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Bibliogr. 27 poz., rys., wykr.
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- Transilvania University of Brasov, Department of Fluid Mechanics, Brasow, 2200, ROMANIA
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bwmeta1.element.baztech-article-BPZ2-0010-0048