Session BB: Biofluid Dynamics IV: Aneurysm
11:00 AM–12:44 PM, Sunday, November 19, 2006
Tampa Marriott Waterside Hotel and Marina Room: Grand Salon F
Chair: George Karniadakis, Brown University
Abstract ID: BAPS.2006.DFD.BB.7
Abstract: BB.00007 : DNS of flow in stenosed carotid artery
12:18 PM–12:31 PM
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Abstract 
Authors:
Leopold Grinberg
(Brown University)
Alexander Yakhot
(Ben-Gurion University)
George Karniadakis
(Brown University)
Direct numerical simulation (DNS) of a three-dimensional flow through a stenosed carotid artery has been performed. Onset of turbulence downstream of the occlusion has been observed. The developing turbulence is characterized by an alternating spatio-temporal transitional regime. The transition to turbulence occurs during the systolic phase approximately five throat-diameters downstream of the throat, while laminarization occurs during the diastolic phase. Transition in space is first enhanced and subsequently decays downstream. The wall shear stress increases in the stenosed internal carotid artery due to the vessel occlusion and as the result of turbulence.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2006.DFD.BB.7