Non-Newtonian and newtonian blood flow in human aorta: A transient analysis

D. Kumar, R. Vinoth, Adhikari Raviraj, C. S. Vijay Shankar

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Pulsatile blood flow in an aorta of normal subject is studied by Computational Fluid Dynamics (CFD) simulations. The main intention of this study is to determine the influence of the non-Newtonian nature of blood on a pulsatile flow through an aorta. The usual Newtonian model of blood viscosity and a non- Newtonian blood model are used to study the velocity distributions, wall pressure and wall shear stress in the aorta over the entire cardiac cycle. Realistic boundary conditions are applied at various branches of the aorta model. The difference between non-Newtonian and Newtonian blood flow models is investigated at four different time instants in the fifth cardiac cycle. This study revealed that, the overall velocity distributions and wall pressure distributions of the aorta for a non-Newtonian fluid model are similar to the same obtained from Newtonian fluid model but the non-Newtonian nature of blood caused a considerable increase in Wall Shear Stress (WSS) value. The maximum wall shear stress value in the aorta for Newtonian fluid model was 241.706 Pa and for non-Newtonian fluid model was 249.827 Pa. Based on the results; it is observed that the non-Newtonian nature of blood affects WSS value. Therefore, it is concluded that the non-Newtonian flow model for blood has to be considered for the flow simulation in aorta of normal subject.

Original languageEnglish
Pages (from-to)3194-3203
Number of pages10
JournalBiomedical Research (India)
Volume28
Issue number7
Publication statusPublished - 01-01-2017
Externally publishedYes

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Transient analysis
Aorta
Blood
Shear stress
Pulsatile Flow
Fluids
Velocity distribution
Pressure
Blood Viscosity
Hydrodynamics
Non Newtonian flow
Pulsatile flow
Flow simulation
Pressure distribution
Computational fluid dynamics
Boundary conditions
Viscosity
Computer simulation

All Science Journal Classification (ASJC) codes

  • Biochemistry, Genetics and Molecular Biology(all)

Cite this

Kumar, D., Vinoth, R., Raviraj, A., & Vijay Shankar, C. S. (2017). Non-Newtonian and newtonian blood flow in human aorta: A transient analysis. Biomedical Research (India), 28(7), 3194-3203.
Kumar, D. ; Vinoth, R. ; Raviraj, Adhikari ; Vijay Shankar, C. S. / Non-Newtonian and newtonian blood flow in human aorta : A transient analysis. In: Biomedical Research (India). 2017 ; Vol. 28, No. 7. pp. 3194-3203.
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Kumar, D, Vinoth, R, Raviraj, A & Vijay Shankar, CS 2017, 'Non-Newtonian and newtonian blood flow in human aorta: A transient analysis', Biomedical Research (India), vol. 28, no. 7, pp. 3194-3203.

Non-Newtonian and newtonian blood flow in human aorta : A transient analysis. / Kumar, D.; Vinoth, R.; Raviraj, Adhikari; Vijay Shankar, C. S.

In: Biomedical Research (India), Vol. 28, No. 7, 01.01.2017, p. 3194-3203.

Research output: Contribution to journalArticle

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Kumar D, Vinoth R, Raviraj A, Vijay Shankar CS. Non-Newtonian and newtonian blood flow in human aorta: A transient analysis. Biomedical Research (India). 2017 Jan 1;28(7):3194-3203.