A study of wall shear stress in 12 aneurysms with respect to different viscosity models and flow conditions |
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| Authors: | Ø yvind Evju,Kristian Valen-Sendstad,Kent-André Mardal |
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| Affiliation: | 1. Center for Biomedical Computing, Simula Research Laboratory, Martin Linges vei 17, Fornebu, Norway;2. Biomedical Simulation Laboratory, Department of Mechanical & Industrial Engineering, University of Toronto, 5 Kings College Road, Toronto, ON, Canada |
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| Abstract: | Recent computational fluid dynamics (CFD) studies relate abnormal blood flow to rupture of cerebral aneurysms. However, it is still debated how to model blood flow with sufficient accuracy. Common assumptions made include Newtonian behaviour of blood, traction free outlet boundary conditions and inlet boundary conditions based on available literature. These assumptions are often required since the available patient specific data is usually restricted to the geometry of the aneurysm and the surrounding vasculature. However, the consequences of these assumptions have so far been inadequately addressed. |
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| Keywords: | Cerebral aneurysms Computational fluid dynamics Wall shear stress Non-Newtonian fluid Boundary conditions |
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