Research Center for Engineering of
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Title: Vorticity Phenomena In Biomedical Contexts
Published In: Scientific Bulletin of the “Politehnica” University of Timisoara, Transactions on Mechanics, ISSN 1224-6077, Tom 50(64), pp. 169-176
Description: ABSTRACT In this paper, a turbulent model is evaluated and validated using two benchmark problems where experimental data are available. The firs case is the stenotic vessel model and the second one coressponds to a coronary artery model. As expected, the mean recirculation zones are associated with high values of the shear stress, which is well known in the haemodynamics field. From a pathological view point, the variation in the shear stress fluctuation level observed here may have several important implications. First, the higher shear stress fluctuation level on the wall indicate that for a symmetric stenosis, greater instance of pathological behavior in the endothelial cells may occur on the side of the wall on which the stenosis is the thickest.
ISSN:ISSN 1224-6077
Publication year: 2005
Keywords:Vortex structure, turbulent flow, separated flow, sudden expansions, turbulent kinetic energy
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Authors: BERNAD Sandor , BERNAD Elena , SUSAN-RESIGA Romeo ,
Type: National Journal Article
Laboratory: Numerical Simulation and Parallel Computing Laboratory
Institution: ARFT