Numerical modeling of a prototype cardiac assist device by implementing fluid-structure interaction

Shahrokh Rahmani; Mehrnaz Oveysi; Alireza Heidari; Mahdi Navidbakhsh; Mansour Alizadeh

doi:10.1016/j.artres.2018.01.002

<Previous Article In Issue

Next Article In Issue>

Volume 22, Issue C, June 2018, Pages 24 - 35

Numerical modeling of a prototype cardiac assist device by implementing fluid-structure interaction

Authors

Shahrokh Rahmani^a, Mehrnaz Oveysi^a, Alireza Heidari^b, Mahdi Navidbakhsh^a^{, *}, Mansour Alizadeh^a

^aSchool of Mechanical Engineering, Iran University of Science and Technology, Tehran 16846, Iran

^bStructural Biomechanics, Structures Division, Department of Civil Engineering, Faculty of Engineering, University of Tehran, Iran

^*Corresponding author. School of Mechanical Engineering, Iran University of Science and Technology, Tehran 16846, Iran. Fax: +98 21 77240488. E-mail address: mnavid@iust.ac.ir (M. Navidbakhsh).

Corresponding Author

Mahdi Navidbakhsh

Received 6 October 2017, Revised 9 January 2018, Accepted 12 January 2018, Available Online 20 March 2018.

DOI: 10.1016/j.artres.2018.01.002 How to use a DOI?
Keywords: Heart failure; Cardiac assist device; Fluid–structure interaction analysis; Von Mises stress
Abstract: The purpose of this study is to simulate the blood flow in a 2D axisymmetric model for the aorta assisted with a type of cardiac assist device in which the balloon part is surrounding the ascending aorta and can pump the blood flow by its inflation/deflation. The blood flow and von Mises stress in the assisted aorta are investigated by fluid–structure interaction analysis (FSI). Taking into consideration three materials and seven thicknesses for the balloon in one layered and three-layered aorta models, the influences of each of these states on the mentioned parameters have been studied. The numerical simulation demonstrates that by using this cardiac assist device, the maximum blood flow velocity increases up to 92% at the time of maximum pressure on the balloon and this configuration augments the maximum von Mises stress. The magnitude of the maximum von Mises stress and the maximum blood velocity reduce by thickening the balloon from 0.8 mm to 2 mm up to 8.9% and 9.95%, respectively. The maximum pressure at the outlet of the aorta increases from 9.77 kPa to 10.4 kPa at the time of applying maximum pressure on the balloon. With the one-layered aorta model, the maximum von Mises stress occurs at the innermost layer of the aorta’s wall on each line across the wall and the balloon. Using the three-layered aorta model, the location of the maximum stress is shifted to the juncture of intima and media layers.
Copyright: © 2018 Association for Research into Arterial Structure and Physiology. Published by Elsevier B.V. All rights reserved.
Open Access: This is an open access article distributed under the CC BY-NC license.

Download article (PDF)
View full text (HTML)

<Previous Article In Issue

Next Article In Issue>

Journal: Artery Research
Volume-Issue: 22 - C
Pages: 24 - 35
Publication Date: 2018/03/20
ISSN (Online): 1876-4401
ISSN (Print): 1872-9312
DOI: 10.1016/j.artres.2018.01.002 How to use a DOI?
Open Access: This is an open access article distributed under the CC BY-NC license.

Cite this article

ris enw bib

TY  - JOUR
AU  - Shahrokh Rahmani
AU  - Mehrnaz Oveysi
AU  - Alireza Heidari
AU  - Mahdi Navidbakhsh
AU  - Mansour Alizadeh
PY  - 2018
DA  - 2018/03/20
TI  - Numerical modeling of a prototype cardiac assist device by implementing fluid-structure interaction
JO  - Artery Research
SP  - 24
EP  - 35
VL  - 22
IS  - C
SN  - 1876-4401
UR  - https://doi.org/10.1016/j.artres.2018.01.002
DO  - 10.1016/j.artres.2018.01.002
ID  - Rahmani2018
ER  -

download .riscopy to clipboard