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LÍZAL, F. JEDELSKÝ, J. BĚLKA, M. ZAREMBA, M. MALÝ, M. JÍCHA, M.
Original Title
Investigation of the Airflow inside Realistic and Semi-Realistic Replicas of Human Airways
Type
conference paper
Language
English
Original Abstract
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.
Keywords
laser-doppler anemometry, lung replica, lung flow
Authors
LÍZAL, F.; JEDELSKÝ, J.; BĚLKA, M.; ZAREMBA, M.; MALÝ, M.; JÍCHA, M.
RIV year
2015
Released
6. 5. 2015
Publisher
EDP Sciences
Location
Francie
ISBN
2100-014X
Periodical
EPJ Web of Conferences
Year of study
92
Number
State
French Republic
Pages from
1
Pages to
8
Pages count
URL
http://dx.doi.org/10.1051/epjconf/20159202048
Full text in the Digital Library
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" }