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Fluids 2017, 2(2), 16; doi:10.3390/fluids2020016

Effect of Wall Flexibility on the Deformation during Flow in a Stenosed Coronary Artery

1
Department of Chemical Engineering, Indian Institute of Technology Hyderabad, Kandi,Sangareddy 502285, Telangana, India
2
Department of Mechanical Engineering, Indian Institute of Technology Hyderabad, Kandi,Sangareddy 502285, Telangana, India
*
Author to whom correspondence should be addressed.
Received: 30 November 2016 / Revised: 31 March 2017 / Accepted: 11 April 2017 / Published: 15 April 2017
(This article belongs to the Special Issue Mechanics of Fluid-Particles Systems and Fluid-Solid Interactions)
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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 teady flow in the artery. The maximum wall deformation in coronary flow onditions 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. View Full-Text
Keywords: fluid-structure interaction (FSI); stenosed artery; steady flow; pulsatile flow; wall deformation; Holzapfel model fluid-structure interaction (FSI); stenosed artery; steady flow; pulsatile flow; wall deformation; Holzapfel model
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Kallekar, L.; Viswanath, C.; Anand, M. Effect of Wall Flexibility on the Deformation during Flow in a Stenosed Coronary Artery. Fluids 2017, 2, 16.

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