Newtonian and non-Newtonian pulsatile flows through an artery with stenosis

P. Halder, A. Husain, M. Zunaid, A. Samad

Research output: Contribution to journalArticle

Abstract

The current study presents three-dimensional modeling and analysis of blood flow through artery stenosis under several variants of pulsatile flow to mimic the atherosclerosis artery disease. The study considered Newtonian and non-Newtonian blood flow models and solved the threedimensional laminar and unsteady Navier-Stokes (NS) equations for different inlet velocity profiles. The Carreau Yasuda model was used for hemodynamics modeling of fluid viscosity. A comparative analysis was carried out for Newtonian and non-Newtonian fluid models under several simple pulsatile, equivalent pulsatile and physiological velocity profiles. The non-Newtonian fluid exhibited a higher centerline velocity. Wall shear stresses, shear strain rates, velocity fields, and vortex distribution for Newtonian and non-Newtonian fluid flows show significant differences. A higher wall shear was noticed near the stenosis. The vortex formed near the stenosis shifts to upstream and downstream of the stenosis with the change of velocity pulse. The velocity profile deflates more for non-Newtonian flows than the Newtonian flows.

Original languageEnglish
Pages (from-to)191-205
Number of pages15
JournalJournal of Engineering Research
Volume14
Issue number2
DOIs
Publication statusPublished - Jan 1 2017

Fingerprint

Pulsatile flow
Fluids
Vortex flow
Blood
Newtonian flow
Non Newtonian flow
Shear walls
Shear strain
Hemodynamics
Navier Stokes equations
Shear stress
Flow of fluids
Strain rate
Viscosity

Keywords

  • Artery stenosis
  • Blood flows
  • Non-newtonian fluid
  • Physiological flows
  • Pulsatile flows

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Newtonian and non-Newtonian pulsatile flows through an artery with stenosis. / Halder, P.; Husain, A.; Zunaid, M.; Samad, A.

In: Journal of Engineering Research, Vol. 14, No. 2, 01.01.2017, p. 191-205.

Research output: Contribution to journalArticle

Halder, P. ; Husain, A. ; Zunaid, M. ; Samad, A. / Newtonian and non-Newtonian pulsatile flows through an artery with stenosis. In: Journal of Engineering Research. 2017 ; Vol. 14, No. 2. pp. 191-205.
@article{63b6a1a7b12446af82a42a13ede13ae6,
title = "Newtonian and non-Newtonian pulsatile flows through an artery with stenosis",
abstract = "The current study presents three-dimensional modeling and analysis of blood flow through artery stenosis under several variants of pulsatile flow to mimic the atherosclerosis artery disease. The study considered Newtonian and non-Newtonian blood flow models and solved the threedimensional laminar and unsteady Navier-Stokes (NS) equations for different inlet velocity profiles. The Carreau Yasuda model was used for hemodynamics modeling of fluid viscosity. A comparative analysis was carried out for Newtonian and non-Newtonian fluid models under several simple pulsatile, equivalent pulsatile and physiological velocity profiles. The non-Newtonian fluid exhibited a higher centerline velocity. Wall shear stresses, shear strain rates, velocity fields, and vortex distribution for Newtonian and non-Newtonian fluid flows show significant differences. A higher wall shear was noticed near the stenosis. The vortex formed near the stenosis shifts to upstream and downstream of the stenosis with the change of velocity pulse. The velocity profile deflates more for non-Newtonian flows than the Newtonian flows.",
keywords = "Artery stenosis, Blood flows, Non-newtonian fluid, Physiological flows, Pulsatile flows",
author = "P. Halder and A. Husain and M. Zunaid and A. Samad",
year = "2017",
month = "1",
day = "1",
doi = "10.24200/tjer.vol.14iss2pp191-205",
language = "English",
volume = "14",
pages = "191--205",
journal = "Journal of Engineering Research",
issn = "1726-6009",
publisher = "Sultan Qaboos University",
number = "2",

}

TY - JOUR

T1 - Newtonian and non-Newtonian pulsatile flows through an artery with stenosis

AU - Halder, P.

AU - Husain, A.

AU - Zunaid, M.

AU - Samad, A.

PY - 2017/1/1

Y1 - 2017/1/1

N2 - The current study presents three-dimensional modeling and analysis of blood flow through artery stenosis under several variants of pulsatile flow to mimic the atherosclerosis artery disease. The study considered Newtonian and non-Newtonian blood flow models and solved the threedimensional laminar and unsteady Navier-Stokes (NS) equations for different inlet velocity profiles. The Carreau Yasuda model was used for hemodynamics modeling of fluid viscosity. A comparative analysis was carried out for Newtonian and non-Newtonian fluid models under several simple pulsatile, equivalent pulsatile and physiological velocity profiles. The non-Newtonian fluid exhibited a higher centerline velocity. Wall shear stresses, shear strain rates, velocity fields, and vortex distribution for Newtonian and non-Newtonian fluid flows show significant differences. A higher wall shear was noticed near the stenosis. The vortex formed near the stenosis shifts to upstream and downstream of the stenosis with the change of velocity pulse. The velocity profile deflates more for non-Newtonian flows than the Newtonian flows.

AB - The current study presents three-dimensional modeling and analysis of blood flow through artery stenosis under several variants of pulsatile flow to mimic the atherosclerosis artery disease. The study considered Newtonian and non-Newtonian blood flow models and solved the threedimensional laminar and unsteady Navier-Stokes (NS) equations for different inlet velocity profiles. The Carreau Yasuda model was used for hemodynamics modeling of fluid viscosity. A comparative analysis was carried out for Newtonian and non-Newtonian fluid models under several simple pulsatile, equivalent pulsatile and physiological velocity profiles. The non-Newtonian fluid exhibited a higher centerline velocity. Wall shear stresses, shear strain rates, velocity fields, and vortex distribution for Newtonian and non-Newtonian fluid flows show significant differences. A higher wall shear was noticed near the stenosis. The vortex formed near the stenosis shifts to upstream and downstream of the stenosis with the change of velocity pulse. The velocity profile deflates more for non-Newtonian flows than the Newtonian flows.

KW - Artery stenosis

KW - Blood flows

KW - Non-newtonian fluid

KW - Physiological flows

KW - Pulsatile flows

UR - http://www.scopus.com/inward/record.url?scp=85040130289&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85040130289&partnerID=8YFLogxK

U2 - 10.24200/tjer.vol.14iss2pp191-205

DO - 10.24200/tjer.vol.14iss2pp191-205

M3 - Article

AN - SCOPUS:85040130289

VL - 14

SP - 191

EP - 205

JO - Journal of Engineering Research

JF - Journal of Engineering Research

SN - 1726-6009

IS - 2

ER -