Efect of linear and Mooney–Rivlin material model on carotid artery hemodynamics

Kumar, Nitesh and Pai, Raghuvir B and Manjunath, M S and Ganesha, A and Khader, Abdul S M (2021) Efect of linear and Mooney–Rivlin material model on carotid artery hemodynamics. Journal of the Brazilian Society of Mechanical Sciences and Engineering, 43. ISSN 1678-5878

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Abstract

Atherosclerosis is one of the most common cardiovascular diseases leading to high morbidity. The study of arterial dynamics using fuid–structure interaction (FSI) technique by taking into account the physiology of fow, the critical hemodynamic parameters can be determined which plays a crucial role in predictive medicine. Due to advances in the computational facilities, coupled feld analysis such as FSI can facilitate understanding of the mechanics of stenosis progression and its early diagnosis. In this study a two-way FSI analysis is carried out using modifed Navier–Stokes equations as the governing equations of blood fow for determining hemodynamic parameters. The arterial wall has been described at diferent linear elastic modulus and compared with hyperelastic Mooney–Rivlin model to evaluate the efect of diferent arterial stifness on hemodynamics. The Mooney–Rivlin model predicts fow reduction with the severe backfow at arterial bifurcation resulting in decreased shear stress and oscillatory behavior. Furthermore, these fndings may be used in understanding the advantages and disadvantages of using hyperelastic artery model in numerical simulations to better understand and predict the variable that causes cardiovascular diseases and as a diagnostic tool. In the present study, variation due to change in arterial wall properties such as linear elastic and Mooney Rivlin hyperelastic and its infuence on hemodynamics are investigated

Item Type: Article
Uncontrolled Keywords: Carotid artery bifurcation · Hemodynamics · Fluid–structure interaction · Wall shear stress · Arterial deformation · Hyperelasticity · Oscillatory shear index · Flow velocity
Subjects: Engineering > MIT Manipal > Mechanical and Manufacturing
Depositing User: MIT Library
Date Deposited: 20 Sep 2021 08:40
Last Modified: 20 Sep 2021 08:40
URI: http://eprints.manipal.edu/id/eprint/157378

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