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research article

One-dimensional models for blood flow in arteries

Formaggia, Luca  
•
Lamponi, Daniele  
•
Quarteroni, Alfio  
2003
Journal of Engineering Mathematics

In this paper a family of one-dimensional nonlinear systems which model the blood pulse propagation in compliant arteries is presented and investigated. They are obtained by averaging the Navier-Stokes equation on each section of an arterial vessel and using simplified models for the vessel compliance. Different differential operators arise depending on the simplifications made on the structural model. Starting from the most basic assumption of pure elastic instantaneous equilibrium, which provides a well-known algebraic relation between intramural pressure and vessel section area, we analyse in turn the effects of terms accounting for inertia, longitudinal prestress and viscoelasticity. The problem of how to account for branching and possible discontinuous wall properties is addressed, the latter aspect being relevant in the presence of prosthesis and stents. To this purpose a domain decomposition approach is adopted and the conditions which ensure the stability of the coupling are provided. The numerical method here used in order to carry out several test cases for the assessment of the proposed models is based on a finite element Taylor-Galerkin scheme combined with operator splitting techniques

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Type
research article
DOI
10.1023/B:ENGI.0000007980.01347.29
Web of Science ID

WOS:000187200200005

Author(s)
Formaggia, Luca  
Lamponi, Daniele  
Quarteroni, Alfio  
Date Issued

2003

Published in
Journal of Engineering Mathematics
Volume

47

Issue

3-4

Start page

251

End page

76

Subjects

biorheology blood vessels decomposition finite element analysis haemodynamics Navier-Stokes equations viscoelasticity

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
CMCS  
Available on Infoscience
April 24, 2007
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/5372
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