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Theoretical models of capillary flow

R Skalak

    Blood Cells
    |January 1, 1982
    PubMed
    Summary
    This summary is machine-generated.

    Red blood cell deformability is crucial for reducing apparent blood viscosity in narrow capillary flows. Mathematical models show flexible cells flow more easily than rigid ones.

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    Area of Science:

    • * Biophysics
    • * Fluid Dynamics
    • * Hematology

    Background:

    • * Capillary blood flow is essential for oxygen and nutrient delivery.
    • * Understanding blood rheology in microcirculation is complex due to cellular interactions.
    • * Previous models often simplified red blood cell behavior.

    Purpose of the Study:

    • * To model capillary blood flow with deformable and rigid red blood cells.
    • * To investigate the impact of red blood cell deformability on apparent viscosity.
    • * To analyze blood flow dynamics in cylindrical tubes.

    Main Methods:

    • * Development of mathematical models for axisymmetric particle flow.
    • * Simulation of blood flow using elastic sphere models for red blood cells.

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  • * Comparison of flow behavior for rigid versus flexible red blood cells.

    • Main Results:

    • * Red blood cell deformability significantly influences flow resistance.
    • * Flexible red blood cells exhibit lower apparent viscosity compared to rigid cells.
    • * Models demonstrate the importance of cellular mechanics in microvascular flow.

    Conclusions:

    • * Red blood cell deformability is a key factor in determining blood viscosity in capillaries.
    • * The findings highlight the necessity of incorporating cell mechanics in blood flow models.
    • * This research contributes to a better understanding of microcirculatory physiology.