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Title: Stenosis effects on the fluid mechanics of the common carotid artery bifurcation for unsteady flows
Authors: Antonova, Nadia 
Xu, D. 
Velcheva, I. 
Kaliviotis, Efstathios 
Tosheva, P. 
Major Field of Science: Engineering and Technology
Field Category: Mechanical Engineering
Keywords: 3D numerical calculations;CCA bifurcation;Stenosis;Velocity and vorticity magnitude
Issue Date: 1-Jan-2015
Source: Journal of Mechanics in Medicine and Biology, 2015, vol. 15, iss. 2, article number 1540008
Volume: 15
Issue: 2
Journal: Journal of Mechanics in Medicine and Biology 
Abstract: The time-varying blood flow in the common carotid artery (CCA) bifurcation is numerically studied on the basis of Navier-Stokes equations for four different cases, including cases with stenoses at different sites in the vicinity of the bifurcation. The cases studied were: (a) without stenoses, (b) with one stenosis upstream the bifurcation, (c) with two opposite stenoses upstream the bifurcation and (d) with an additional stenosis on the apex of the bifurcation. The mesh was generated via a geometry reconstruction and imported into a computational fluid dynamics (CFD) solver. The numerical results of the blood flow in the CCA bifurcation gave a detailed picture of the axial velocity and presented as velocity and vorticity magnitudes. More specifically, it was observed that the appearance of stenotic regions upstream the bifurcation affect both the velocity and vorticity characteristics, whereas a stenoses on the apex of the bifurcation seems to have a small effect on the vorticity characteristics downstream the flow.
ISSN: 0219-5194
DOI: 10.1142/S0219519415400084
Rights: © World Scientific Publishing Company
Type: Article
Affiliation : Bulgarian Academy of Sciences 
Tianjin University 
University Hospital of Neurology and Psychiatry 'St. Naum' 
Cyprus University of Technology 
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