Detail publikačního výsledku

Investigation of the Airflow inside Realistic and Semi-Realistic Replicas of Human Airways

LÍZAL, F.; JEDELSKÝ, J.; BĚLKA, M.; ZAREMBA, M.; MALÝ, M.; JÍCHA, M.

Originální název

Investigation of the Airflow inside Realistic and Semi-Realistic Replicas of Human Airways

Anglický název

Investigation of the Airflow inside Realistic and Semi-Realistic Replicas of Human Airways

Druh

Stať ve sborníku v databázi WoS či Scopus

Originální abstrakt

Measurement of velocity in human lungs during breathing cycle is a challenging task for researchers, since the measuring location is accessible only with significant difficulties. A special measuring rig consisting of optically transparent replica of human lungs, breathing simulator, particle generator and Laser-Doppler anemometer was developed and used for investigation of the velocity in specific locations of lungs during simulated breathing cycle.Experiments were performed on two different replicas of human lungs in corresponding measuring points tofacilitate the analysis of the influence of the geometry and its simplification on the flow. The analysis of velocity course and turbulence intensity revealed that special attention should be devoted to the modelling of vocal cords position during breathing, as the position of laryngeal jet created by vocal cords significantly influences velocity profiles in trachea. The shapes of velocity courses during expiration proved to be consistent for both replicas; however magnitudes of peak expiratory velocity differ between the corresponding measuring points in both the replicas.

Anglický abstrakt

Measurement of velocity in human lungs during breathing cycle is a challenging task for researchers, since the measuring location is accessible only with significant difficulties. A special measuring rig consisting of optically transparent replica of human lungs, breathing simulator, particle generator and Laser-Doppler anemometer was developed and used for investigation of the velocity in specific locations of lungs during simulated breathing cycle.Experiments were performed on two different replicas of human lungs in corresponding measuring points tofacilitate the analysis of the influence of the geometry and its simplification on the flow. The analysis of velocity course and turbulence intensity revealed that special attention should be devoted to the modelling of vocal cords position during breathing, as the position of laryngeal jet created by vocal cords significantly influences velocity profiles in trachea. The shapes of velocity courses during expiration proved to be consistent for both replicas; however magnitudes of peak expiratory velocity differ between the corresponding measuring points in both the replicas.

Klíčová slova

laser-doppler anemometry, lung replica, lung flow

Klíčová slova v angličtině

laser-doppler anemometry, lung replica, lung flow

Autoři

LÍZAL, F.; JEDELSKÝ, J.; BĚLKA, M.; ZAREMBA, M.; MALÝ, M.; JÍCHA, M.

Rok RIV

2016

Vydáno

06.05.2015

Nakladatel

EDP Sciences

Místo

Francie

Kniha

EPJ Web of Conferences

ISSN

2100-014X

Periodikum

EPJ Web of Conferences

Svazek

92

Číslo

2015

Stát

Francouzská republika

Strany od

1

Strany do

8

Strany počet

8

URL

http://dx.doi.org/10.1051/epjconf/20159202048

Plný text v Digitální knihovně

http://hdl.handle.net/11012/70017

BibTex

@inproceedings{BUT111792,
  author="František {Lízal} and Jan {Jedelský} and Miloslav {Bělka} and Matouš {Zaremba} and Milan {Malý} and Miroslav {Jícha}",
  title="Investigation of the Airflow inside Realistic and Semi-Realistic Replicas of Human Airways",
  booktitle="EPJ Web of Conferences",
  year="2015",
  journal="EPJ Web of Conferences",
  volume="92",
  number="2015",
  pages="1--8",
  publisher="EDP Sciences",
  address="Francie",
  doi="10.1051/epjconf/20159202048",
  issn="2100-014X",
  url="http://dx.doi.org/10.1051/epjconf/20159202048"
}

Dokumenty

epjconf_efm2014_02048