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Non-Newtonian blood flow in human right coronary arteries: Transient simulations
journal contribution
posted on 2023-05-16, 18:01 authored by Johnston, BM, Jphnston, PR, Stuart CorneyStuart Corney, David KilpatrickDavid KilpatrickThis study looks at pulsatile blood flow through four different right coronary arteries, which have been reconstructed from biplane angiograms. A non-Newtonian blood model (the Generalised Power Law), as well as the usual Newtonian model of blood viscosity, is used to study the wall shear stress in each of these arteries over the entire cardiac cycle. The difference between Newtonian and non-Newtonian blood models is also studied over the whole cardiac cycle using the recently generalised global non-Newtonian importance factor. In addition, the flow is studied by considering paths of massless particles introduced into the flow field. The study shows that, when studying the wall shear stress distribution for transient blood flow in arteries, the use of a Newtonian blood model is a reasonably good approximation. However, to study the flow within the artery in greater detail, a non-Newtonian model is more appropriate. © 2005 Elsevier Ltd. All rights reserved.
History
Publication title
Journal of BiomechanicsVolume
39Issue
6Pagination
1116-1128ISSN
0021-9290Department/School
Tasmanian School of MedicinePublisher
ELSEVIER SCI LTD,Place of publication
OXFORD, ENGLANDRepository Status
- Restricted