Publication result detail

The flow of micrometre-sized glass fibres in a replica of the first bifurcation in human airways

LÍZAL, F.; CABALKA, M.; MALÝ, M.; BĚLKA, M.; MIŠÍK, O.; JEDELSKÝ, J.; JÍCHA, M.

Original Title

The flow of micrometre-sized glass fibres in a replica of the first bifurcation in human airways

English Title

The flow of micrometre-sized glass fibres in a replica of the first bifurcation in human airways

Type

Paper in proceedings (conference paper)

Original Abstract

Prediction of the fate of inhaled fibres in human airways represents a significant challenge in comparison with spherical particles. There are several ways of computation ranging from a simplified approach assuming equivalent spheres with empirical corrections to sophisticated numerical solutions of momentum and rotations in three-dimensional flow. Each of these mathematical approaches has its area of application. However, their precision is still insufficient namely because of the lack of experimental data for validation. Especially data on the behaviour of fibres under transient flow in bifurcating channels is missing. This paper presents a description of the experimental setup for such measurement and statistically evaluated characteristics of the rotation and flips of micrometre-sized glass fibres. The results proved that there are significant differences in the rotations of fibres when compared to previously measured stationary flows.

English abstract

Prediction of the fate of inhaled fibres in human airways represents a significant challenge in comparison with spherical particles. There are several ways of computation ranging from a simplified approach assuming equivalent spheres with empirical corrections to sophisticated numerical solutions of momentum and rotations in three-dimensional flow. Each of these mathematical approaches has its area of application. However, their precision is still insufficient namely because of the lack of experimental data for validation. Especially data on the behaviour of fibres under transient flow in bifurcating channels is missing. This paper presents a description of the experimental setup for such measurement and statistically evaluated characteristics of the rotation and flips of micrometre-sized glass fibres. The results proved that there are significant differences in the rotations of fibres when compared to previously measured stationary flows.

Keywords

fibres, flow, aerosol, airway,

Key words in English

fibres, flow, aerosol, airway,

Authors

LÍZAL, F.; CABALKA, M.; MALÝ, M.; BĚLKA, M.; MIŠÍK, O.; JEDELSKÝ, J.; JÍCHA, M.

RIV year

2023

Released

29.11.2022

Publisher

Technical University of Liberec

Location

Dvůr Králové nad Labem

Book

Proceedings of the International Conference Experimental Fluid Mechanics 2022

ISBN

2101-6275

Periodical

EPJ Web of Conferences

State

French Republic

Pages from

146

Pages to

149

Pages count

4

URL

https://www.epj-conferences.org/articles/epjconf/abs/2024/09/epjconf_efm2024_01022/epjconf_efm2024_01022.html

BibTex

@inproceedings{BUT180550,
  author="František {Lízal} and Matouš {Cabalka} and Milan {Malý} and Miloslav {Bělka} and Ondrej {Mišík} and Jan {Jedelský} and Miroslav {Jícha}",
  title="The flow of micrometre-sized glass fibres in a replica of the first bifurcation in human airways",
  booktitle="Proceedings of the International Conference Experimental Fluid Mechanics 2022",
  year="2022",
  journal="EPJ Web of Conferences",
  pages="146--149",
  publisher="Technical University of Liberec",
  address="Dvůr Králové nad Labem",
  doi="10.1051/epjconf/202429901022",
  issn="2100-014X",
  url="https://www.epj-conferences.org/articles/epjconf/abs/2024/09/epjconf_efm2024_01022/epjconf_efm2024_01022.html"
}