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Assessment of Geometrical Influence on WSS Estimation in the Human Aorta
Linköping University, The Institute of Technology. Linköping University, Department of Mechanical Engineering, Applied Thermodynamics and Fluid Mechanics.
2006 (English)In: WSEAS Transactions on Fluid Mechanics, 2006, Vol. 1Conference paper, Published paper (Refereed)
Abstract [en]

Computational fluid dynamics simulations were performed on a stenosed human aorta with poststenotic dilatation, in order to estimate wall shear stress (WSS). WSS is important due to its correlation with atherosclerosis. Both steady-state and non-stationary simulations were conducted. Three different models were created from a set of MRI images. Comparison of geometrically different models was accomplished by using geometrical landmarks and a comparison parameter. Geometrical differences had larger influence on WSS magnitude than inflow rotation in steady-state results for the models used. In non-stationary flow the largest differences in WSS are found when the flow velocity near the wall is low e.g. when the inflow is low or in recirculation regions.

Place, publisher, year, edition, pages
2006. Vol. 1
Keyword [en]
Wall Shear Stress, Human Aorta, Geometry Influence, CFD, Result, Comparision
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-36742Local ID: 32309OAI: oai:DiVA.org:liu-36742DiVA: diva2:257591
Available from: 2009-10-10 Created: 2009-10-10 Last updated: 2009-10-13

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Gårdhagen, Roland

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