Research article

Modeling and computation for unsteady blood flow and solute concentration in a constricted porous artery

  • Received: 20 November 2022 Revised: 23 February 2023 Accepted: 24 February 2023 Published: 07 March 2023
  • We investigated a physical system for unsteady blood flow and solute transport in a section of a constricted porous artery. The aim of this study was to determine effects of hematocrit, stenosis, pulse oscillation, diffusion, convection and chemical reaction on the solute transport. The significance of this study was uncovering combined roles played by stenosis height, hematocrit, pulse oscillation period, reactive rate, blood speed, blood pressure force and radial and axial extent of the porous artery on the solute transported by the blood flow in the described porous artery. We used both analytical and computational methods to determine blood flow quantities and solute transport for different parametric values of the described physical system. We found that solute transport increases with increasing stenosis height, blood pulsation period, convection and blood pressure force. However, transportation of solute reduces with increasing hematocrit, chemical reactive rate and radial or axial distance.

    Citation: Daniel N. Riahi, Saulo Orizaga. Modeling and computation for unsteady blood flow and solute concentration in a constricted porous artery[J]. AIMS Bioengineering, 2023, 10(1): 67-88. doi: 10.3934/bioeng.2023007

    Related Papers:

  • We investigated a physical system for unsteady blood flow and solute transport in a section of a constricted porous artery. The aim of this study was to determine effects of hematocrit, stenosis, pulse oscillation, diffusion, convection and chemical reaction on the solute transport. The significance of this study was uncovering combined roles played by stenosis height, hematocrit, pulse oscillation period, reactive rate, blood speed, blood pressure force and radial and axial extent of the porous artery on the solute transported by the blood flow in the described porous artery. We used both analytical and computational methods to determine blood flow quantities and solute transport for different parametric values of the described physical system. We found that solute transport increases with increasing stenosis height, blood pulsation period, convection and blood pressure force. However, transportation of solute reduces with increasing hematocrit, chemical reactive rate and radial or axial distance.


    Abbreviations

    L0

    length of damaged stenotic region

    d

    location of stenosis

    r, z

    radial and axial coordinates, respectively

    R(z)

    radius of stenotic region

    R0

    radius of non-stenotic region

    δ

    maximum radius of stenotic region

    u

    blood velocity vector along the axial direction

    v

    blood velocity vector along the radial direction

    C

    solute concentration

    D0

    diffusivity coefficient

    E0

    reaction constant

    ρ

    density

    P

    blood pressure

    k

    permeability of the porous medium

    µs

    variable blood

    µ

    dynamic viscosity of the plasma in the blood

    λ

    maximum hematocrit at the center of cylindrical tube

    n

    parameter used for the formula's constriction

    γ

    small parameter defined as the ratio of R0 to L0

    F1

    flow resistance

    τw0

    wall shear stress of zeroth order

    τw1

    wall shear stress of 1st order

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    Acknowledgments



    The authors are thankful for reviewers' comments and suggestions for an earlier version of this work that improved the quality of the present paper. S.O. thanks UTRGV for the office space and hospitality during summer of 2022 and winter of 2022.

    Conflict of interest



    The authors declare no conflict of interest.

    Author contributions



    The authors contributed equally on the completion of this manuscript.

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