TITLE:
Effect of tapered angles in an artery on distribution of blood flow pressure with gravity considered
AUTHORS:
Wenying Mu, Shanguang Chen, Changsheng Ma, Jianzeng Dong
KEYWORDS:
Tapered Angles; Distribution of Blood Flow Pressure (DBFP); Gravity; Numerical Simulation
JOURNAL NAME:
Journal of Biomedical Science and Engineering,
Vol.6 No.12A,
December
17,
2013
ABSTRACT: The
tapered angles of an artery significantly influence the local hemodynamics.
However, as gravity is considered, little is known about the effect of tapered
angles on the hemodynamics. In this study, we explored whether the effect of
tapered angles on the distribution of blood flow pressure (DBFP) differed with
gravity considered or not. Numerical simulations of the DBFP in a single vessel
were performed based on such tapered angles as 0°, 0.5° and 1°. In the model
used for simulation, gravity was introduced as a body force. We obtained the
following simulations: i) The larger the tapered angles were, the better distributed
the blood flow pressure; ii) The tapered effect was an important factor leading
to nonlinearity in blood flow pressure; iii) Gravity affected DBFP coupling
with the tapered angles, yet independently influenced the dimension of the DBFP.
At the same time, the effective intensity of gravity decreased with the increase
of tapered angles.