Publication detail

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

LÍZAL, F. CABALKA, M. MALÝ, M. ELCNER, J. BĚLKA, M. LÍZALOVÁ ŠUJANSKÁ, E. FARKAS, Á. ŠTARHA, P. PECH, O. MIŠÍK, O. JEDELSKÝ, J. JÍCHA, M.

Original Title

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

Type

journal article in Web of Science

Language

English

Original Abstract

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.

Keywords

NONSPHERICAL PARTICLES; DEPOSITION; ASBESTOS; MOTION

Authors

LÍZAL, F.; CABALKA, M.; MALÝ, M.; ELCNER, J.; BĚLKA, M.; LÍZALOVÁ ŠUJANSKÁ, E.; FARKAS, Á.; ŠTARHA, P.; PECH, O.; MIŠÍK, O.; JEDELSKÝ, J.; JÍCHA, M.

Released

28. 1. 2022

Publisher

Taylor & Francis

Location

PHILADELPHIA

ISBN

0278-6826

Periodical

AEROSOL SCIENCE AND TECHNOLOGY

Year of study

56

Number

4

State

United States of America

Pages from

367

Pages to

381

Pages count

15

URL

https://www.tandfonline.com/doi/full/10.1080/02786826.2022.2027334

Full text in the Digital Library

http://hdl.handle.net/11012/204599

BibTex

@article{BUT176919,
  author="František {Lízal} and Matouš {Cabalka} and Milan {Malý} and Jakub {Elcner} and Miloslav {Bělka} and Elena {Lízalová Šujanská} and Árpád {Farkas} and Pavel {Štarha} and Ondřej {Pech} and Ondrej {Mišík} and Jan {Jedelský} and Miroslav {Jícha}",
  title="On the behavior of inhaled fibers in a replica of the first airway bifurcation under steady flow conditions",
  journal="AEROSOL SCIENCE AND TECHNOLOGY",
  year="2022",
  volume="56",
  number="4",
  pages="367--381",
  doi="10.1080/02786826.2022.2027334",
  issn="0278-6826",
  url="https://www.tandfonline.com/doi/full/10.1080/02786826.2022.2027334"
}