Non-Newtonian blood flow in human right coronary arteries: transient simulations.

Abstract:

:This 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.

journal_name

J Biomech

journal_title

Journal of biomechanics

authors

Johnston BM,Johnston PR,Corney S,Kilpatrick D

doi

10.1016/j.jbiomech.2005.01.034

keywords:

subject

Has Abstract

pub_date

2006-01-01 00:00:00

pages

1116-28

issue

6

eissn

0021-9290

issn

1873-2380

pii

S0021-9290(05)00097-7

journal_volume

39

pub_type

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