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Perfusable Vascular Network with a Tissue Model in a Microfluidic Device
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A mathematical model for understanding fluid flow through engineered tissues containing microvessels.

Kristen T Morin, Michelle S Lenz, Caroline A Labat

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    Summary
    This summary is machine-generated.

    A new computational model simulates fluid flow in engineered tissues with complex microvessel networks. This finite difference model accurately predicts perfused microvessel density from measurable properties.

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    Area of Science:

    • Biomedical Engineering
    • Computational Fluid Dynamics
    • Tissue Engineering

    Background:

    • Limited understanding of fluid flow in engineered tissues with non-native microvessel topologies.
    • Need for efficient computational models to analyze flow in dense, potentially nonperfusable microvessel networks.

    Purpose of the Study:

    • To develop and validate a computational model for fluid flow in engineered tissues.
    • To correlate microvessel morphometric properties with flow characteristics within the tissue model.

    Main Methods:

    • Developed a finite difference (FD) model incorporating Poiseuille flow in microvessels and Darcy flow in the interstitium.
    • Validated the FD model against a finite element (FE) model for single-tube and 2D tissue scenarios.
    • Explored model utility by correlating flow metrics to microvessel morphometric properties.

    Main Results:

    • The FD model accurately simulates fluid flow in engineered microvessel networks.
    • Model accuracy was confirmed through comparisons with FE models.
    • The model successfully predicts perfused microvessel density based on measurable parameters.

    Conclusions:

    • The developed FD model provides an efficient tool for evaluating fluid flow in engineered tissues.
    • The model demonstrates the ability to link tissue microarchitecture to fluid perfusion dynamics.
    • This approach can aid in the design and optimization of engineered tissues.