Simulation of Pulsatile Flow of Blood in Stenosed Coronary Artery Bypass with Graft
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1.
Department of Mathematics, Mahidol University, Payathai, Bangkok, Thailand 10400
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2.
Department of Mathematics and Statistics, Curtin University of Technology, GOP Box U1987, Perth, WA 6845
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3.
Department of Mathematics, Mahidol Universi, Payathai, Bangkok, Thailand 10400
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Received:
01 December 2005
Accepted:
29 June 2018
Published:
01 February 2006
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MSC :
92C10.
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In this paper, we investigate the behavior of the pulsatile blood
flow in a stenosed right coronary artery with a bypass graft. The
human blood is assumed to be a non-Newtonian fluid and its viscous
behavior is described by the Carreau model. The transient
phenomena of blood flow though the stenosed region and the bypass
grafts are simulated by solving the three
dimensional unsteady Navier-Stokes equations and continuity
equation. The influence of the bypass angle on the flow
interaction between the jet flow from the native artery and the
flow from the bypass graft is investigated. Distributions of
velocity, pressure and wall shear stresses are determined under
various conditions. The results show that blood pressure in
the stenosed artery drops dramatically in the stenosis area and
that high wall shear stresses occur around the stenosis site.
Citation: B. Wiwatanapataphee, D. Poltem, Yong Hong Wu, Y. Lenbury. Simulation of Pulsatile Flow of Blood in Stenosed Coronary Artery Bypass with Graft[J]. Mathematical Biosciences and Engineering, 2006, 3(2): 371-383. doi: 10.3934/mbe.2006.3.371
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Abstract
In this paper, we investigate the behavior of the pulsatile blood
flow in a stenosed right coronary artery with a bypass graft. The
human blood is assumed to be a non-Newtonian fluid and its viscous
behavior is described by the Carreau model. The transient
phenomena of blood flow though the stenosed region and the bypass
grafts are simulated by solving the three
dimensional unsteady Navier-Stokes equations and continuity
equation. The influence of the bypass angle on the flow
interaction between the jet flow from the native artery and the
flow from the bypass graft is investigated. Distributions of
velocity, pressure and wall shear stresses are determined under
various conditions. The results show that blood pressure in
the stenosed artery drops dramatically in the stenosis area and
that high wall shear stresses occur around the stenosis site.
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