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
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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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