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On the behavior of inhaled fibers in a replica of the first airway bifurcation under steady flow conditions

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F22%3APU143782" target="_blank" >RIV/00216305:26210/22:PU143782 - isvavai.cz</a>

  • Result on the web

    <a href="https://www.tandfonline.com/doi/full/10.1080/02786826.2022.2027334" target="_blank" >https://www.tandfonline.com/doi/full/10.1080/02786826.2022.2027334</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1080/02786826.2022.2027334" target="_blank" >10.1080/02786826.2022.2027334</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    On the behavior of inhaled fibers in a replica of the first airway bifurcation under steady flow conditions

  • Original language description

    Inhaled fibers can potentially cause inflammation of the lung tissue and interstitium, which after long-term exposure may lead to lung cancer, malignant mesothelioma, or pulmonary and pleural fibrosis. To reduce the risk and set the appropriate occupational hygiene regulations, it is important to be able to precisely calculate the fate of inhaled fibers depending on their physical characteristics and inhalation conditions. In the absence of experimental data on the real behavior - trajectories, orientation and flipping - of inhaled fibers, a new test rig was assembled for visualization and recording of flowing fibers in a replica of the human trachea and the first bronchial bifurcation. Fibers prepared from commercially produced glass fibers have been processed, dispersed, and introduced into the airway replica. Visualization was performed using a powerful LED light and a high-speed camera. The flow of fibers was evaluated upstream and downstream of the realistic asymmetrical bifurcation and dependence on flow conditions was sought. The fractions of parallelly and perpendicularly flowing fibers were statistically evaluated in three locations. The frequency of flipping was also analyzed. The results show that the parallel orientation of the fibers is less dominant than expected. The fiber orientation tables for various conditions can be used to adjust and improve computational simulations of inhaled fibers in the human airways.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    20301 - Mechanical engineering

Result continuities

  • Project

    <a href="/en/project/GA18-25618S" target="_blank" >GA18-25618S: Research of the effect of the non-stationary flow on the transport of fibers in successively bifurcating mini-channels</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2022

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    AEROSOL SCIENCE AND TECHNOLOGY

  • ISSN

    0278-6826

  • e-ISSN

    1521-7388

  • Volume of the periodical

    56

  • Issue of the periodical within the volume

    4

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    15

  • Pages from-to

    367-381

  • UT code for WoS article

    000750493000001

  • EID of the result in the Scopus database

    2-s2.0-85124132709