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Numerical Study of Non-Newtonian Blood Behavior in the Abdominal Aortic Bifurcation of a Patient-Specific at Rest

Author

Listed:
  • Carlos Oliveira

    (ECT/UTAD – School of Science and Technology, University of Trás-os-Montes e Alto Douro, Vila Real,Portugal.)

  • Armando A. Soares
  • Sílvia Gonzaga

    (ECT/UTAD – School of Science and Technology, University of Trás-os-Montes e Alto Douro, Vila Real,Portugal.
    INEGI-Institute of Science and Innovation in Mechanical and Industrial Engineering, Porto, Portugal.)

  • André Simões

    (Hospital Centre Lisboa Norte, Hospital de Santa Maria e Hospital Pulido Valente, Lisbon, Portugal.)

  • Abel Rouboa

    (ECT/UTAD – School of Science and Technology, University of Trás-os-Montes e Alto Douro, Vila Real,Portugal.
    MEAM-Department of Mechanical Engineering and Applied Mechanics, University of Pennsylvania, Philadelphia, PA, USA.
    INEGI-Institute of Science and Innovation in Mechanical and Industrial Engineering, Porto, Portugal.)

Abstract

Background : The interaction of blood flow with walls of blood vessels is central for the development and maintenance of cardiovascular health. The analysis of wall shear stress is, therefore, fundamental in hemodynamic studies. Objective : The aim of this work is to study numerically the influence of the shear thinning blood properties on the hemodynamics in the abdominal aortic bifurcation for a patient-specific at rest. Methods : Were tested two models for the blood dynamic viscosity, one Newtonian and other non-Newtonian, with dependence on hematocrit and total protein minus albumin. Results and Conclusion : The results show the shear thinning behavior influence on the velocity distribution and wall shear stress. Furthermore, wall shear stress values are globally lower for non-Newtonian blood model at high velocity values than those for the Newtonian blood model. However, for low velocity values this behavior is inverted.

Suggested Citation

  • Carlos Oliveira & Armando A. Soares & Sílvia Gonzaga & André Simões & Abel Rouboa, 2017. "Numerical Study of Non-Newtonian Blood Behavior in the Abdominal Aortic Bifurcation of a Patient-Specific at Rest," The Open Sports Sciences Journal, Bentham Open, vol. 10(1), pages 279-285, December.
    • Handle: RePEc:ben:tospsj:v:10:y:2017:i:1:p:279-285
    DOI: 10.2174/1875399X01710010279
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    References listed on IDEAS

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    1. Armando A. Soares & Sílvia Gonzaga & Carlos Oliveira & André Simões & Abel I. Rouboa, 2017. "Computational fluid dynamics in abdominal aorta bifurcation: non-Newtonian versus Newtonian blood flow in a real case study," Computer Methods in Biomechanics and Biomedical Engineering, Taylor & Francis Journals, vol. 20(8), pages 822-831, June.
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