Numerical simulations of haemodynamic factors and hyperelastic Circumferential Strain/Stress in the ideal and healthy-patient-specific carotid bifurcations for different rheological models

Mostafa Toloui, Ali Nikparto, Bahar Firoozabadi, Mohammad S. Saidi

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

To explore the role of hemodynamic in the initiation and progression of stenosis in carotid artery bifurcation, a Computational Fluid Dynamics (CFD) technique is applied. The effect of four rheology models is investigated as well as various mechanical phenomena. In this study, a Finite Element Method (FEM) was applied to simulate the physiologic Circumferential Strain/Stress (CS) Meanwhile, to investigate the role of vessel wall flexibility, a Fluid-Structure Interaction (FSI) analysis was applied. It was concluded that velocity profiles and WSS show sensitivity to arterial wall stiffening while shear thinning models do not have a dominant effect on the flow field.

Original languageEnglish (US)
Pages (from-to)387-412
Number of pages26
JournalInternational Journal of Biomedical Engineering and Technology
Volume6
Issue number4
DOIs
StatePublished - Aug 2011
Externally publishedYes

Bibliographical note

Funding Information:
Thanks to Dr G. P. Lewis for his valuable help with the edition of the manuscript, useful comments, encouragement and corrections, to Steve Bachman for producing the maps and helping with conservation assessments matters, Dr G. Davidse for checking critical Nicaragua collections in the Herbarium MO. Dr. Mario Sousa for his critical and valuable comments that improved the manuscript.

Keywords

  • CFD
  • CS
  • Carotid artery bifurcation
  • Circumferential strain/stress
  • Computational fluid dynamics
  • FSI
  • Fluid-structure interaction
  • Newtonian
  • Non-Newtonian
  • WSS
  • Wall shear stress

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