Endotracheal tubes design: The role of tube bending

Talib Dbouk, Dimitris Drikakis

    Research output: Contribution to journalArticlepeer-review


    Endotracheal tubes (ETT) passed inside the human trachea witness tube bending at different angles, affecting the local fluid flow dynamics. This induces a variable mechanical ventilation performance across patients’ comfortability levels. Our understanding of the local fluid flow dynamics phenomena is thus crucial to enhance the maneuverability of ETT under operation. For the first time to our knowledge, we shed light on ETT through computational fluid dynamics (CFD) to investigate the bending effect of ETT on the local airflow in volume-controlled mechanical ventilation. We considered an ETT with 180° arc bend configuration, including Murphy’s eye. We identified several flow phenomena associated with the bending, such as flow asymmetries, secondary flows, and vortex dynamics throughout the tube.

    Original languageEnglish
    Article number1503
    Issue number8
    Publication statusPublished - Aug 2021


    • Computational physics
    • Endotracheal tube
    • Fluid flow dynamics
    • Human health
    • Human respiratory system
    • Mechanical ventilation
    • Modeling and simulation


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