Kallekar, Laxman and Chinthapenta, Viswanath and Mohan, Anand
(2017)
Effect of Wall Flexibility on the Deformation during
Flow in a Stenosed Coronary Artery.
Fluids, 2 (2).
pp. 1-10.
ISSN 2311-5521
Abstract
The effect of varying wall flexibility on the deformation of an artery during steady and
pulsatile flow of blood is investigated. The artery geometry is recreated from patient-derived data
for a stenosed left coronary artery. Blood flow in the artery is modeled using power-law fluid.
The fluid-structure interaction of blood flow on artery wall is simulated using ANSYS 16.2, and the
resulting wall deformation is documented. A comparison of wall deformation using flexibility models
like Rigid, Linear Elastic, Neo-hookean, Mooney-Rivlin and Holzapfel are obtained for steady flow in
the artery. The maximum wall deformation in coronary flow conditions predicted by the Holzapfel
model is only around 50% that predicted by the Neo-Hookean model. The flow-induced deformations
reported here for patient-derived stenosed coronary artery with physiologically accurate model are
the first of its kind. These results help immensely in the planning of angioplasty.
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