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Numerical investigation of unsteady pulsatile Newtonian/non-Newtonian blood flow through curved stenosed arteries.

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  • المؤلفون: Lakzian E;Lakzian E; Akbarzadeh P; Akbarzadeh P
  • المصدر:
    Bio-medical materials and engineering [Biomed Mater Eng] 2020; Vol. 30 (5-6), pp. 525-540.
  • نوع النشر :
    Journal Article; Validation Study
  • اللغة:
    English
  • معلومة اضافية
    • المصدر:
      Publisher: IOS Press Country of Publication: Netherlands NLM ID: 9104021 Publication Model: Print Cited Medium: Internet ISSN: 1878-3619 (Electronic) Linking ISSN: 09592989 NLM ISO Abbreviation: Biomed Mater Eng Subsets: MEDLINE
    • بيانات النشر:
      Publication: Amsterdam : IOS Press
      Original Publication: New York : Pergamon Press, c1991-
    • الموضوع:
      Models, Cardiovascular* ; Torsion, Mechanical*; Arteries/*pathology ; Arteries/*physiopathology ; Pulsatile Flow/*physiology; Blood Flow Velocity/physiology ; Blood Viscosity/physiology ; Computer Simulation ; Constriction, Pathologic/pathology ; Constriction, Pathologic/physiopathology ; Hemodynamics/physiology ; Humans ; Models, Theoretical ; Shear Strength/physiology ; Stress, Mechanical ; Vascular Diseases/pathology ; Vascular Diseases/physiopathology
    • نبذة مختصرة :
      A numerical investigation of Newtonian/non-Newtonian unsteady pulsatile entry blood flow inside a 3D curved stenosed artery is presented. For considering the non-Newtonian effect (shear thinning or shear thickening behavior), the blood viscosity is characterized by the power-law model (Ostwald de Waele Equation). At the inlet of the artery, a realistic pulsatile waveform is utilized according to the experimental data reported by other researchers. This study belongs to the analysis of the curvature ratios, percentage and length ratio of stenosis, and blood thickening on hemodynamic characteristics of the flow. The results emphasize that the maximum wall shear stress happens near the stenosis neck and as expected, by decreasing the stenosis length, the maximum value of wall shear stress increases. In addition, the results indicate that the shear thickening fluid shows a more stable velocity profile rather than the shear thinning fluid flow.
    • Contributed Indexing:
      Keywords: Pulsatile blood flow; curvature ratios; curved stenosed artery; non-Newtonian power-law model; stenosis length ratio
    • الموضوع:
      Date Created: 20191128 Date Completed: 20201127 Latest Revision: 20201127
    • الموضوع:
      20231215
    • الرقم المعرف:
      10.3233/BME-191072
    • الرقم المعرف:
      31771034