Publication detail
Numerical simulation of air flow in a realistic model of the human upper airways
ELCNER, J. FORMAN, M. JEDELSKÝ, J. LÍZAL, F. JÍCHA, M.
Czech title
Numerická simulace proudění v realistickém modelu horních cest dýchacích
English title
Numerical simulation of air flow in a realistic model of the human upper airways
Type
conference paper
Language
en
Original abstract
This article deals with the numerical simulation of air flow in a realistic model of the human upper airways and a comparison of calculated velocity profiles with experimental results. The realistic model of the upper respiratory tract used for the comparison includes the larynx, trachea and bronchial tree to the fourth generation of branching. The numerical simulation employs URANS approach for cyclic flow regime which represents inspiration and expiration of air by sinusoidal function for the air flow rate of 15 l/min. The experimental measurement is performed using Phase-Doppler Particle Anemometry (P/DPA) on the same geometry as the simulation. The velocity data are compared at several points in the trachea, and in the first and second generation of the bronchial tree. Specific air flow characteristics are documented and discussed based on results of the numerical simulation of the velocity field.
Czech abstract
Tento článek se zabývá numerickou simulací proudění v realistickém modelu horních cest dýchacích a ověřením vypočtených hodnot pomocí dat z experimentu. Model použitý pro srovnání obsahuje hrtan, tracheu a bronchiální strom do čtvrté generace větvení. Simulace využívá model URANS k simulování cyklického režimu dýchání o objemovém toku 15 l/min. Experimenty byly provedeny pomocí fázové dopplerovské anemometrie (P/DPA) na totožné geometrii jako simulace. Hodnoty rychlostí byly srovnávány v několika bodech v trachey a v první a druhé generaci bronchiálního stromu.
English abstract
This article deals with the numerical simulation of air flow in a realistic model of the human upper airways and a comparison of calculated velocity profiles with experimental results. The realistic model of the upper respiratory tract used for the comparison includes the larynx, trachea and bronchial tree to the fourth generation of branching. The numerical simulation employs URANS approach for cyclic flow regime which represents inspiration and expiration of air by sinusoidal function for the air flow rate of 15 l/min. The experimental measurement is performed using Phase-Doppler Particle Anemometry (P/DPA) on the same geometry as the simulation. The velocity data are compared at several points in the trachea, and in the first and second generation of the bronchial tree. Specific air flow characteristics are documented and discussed based on results of the numerical simulation of the velocity field.
Keywords in Czech
CFD, Plíce, Proudová pole
Keywords in English
CFD, Lung, Air flow
RIV year
2010
Released
24.11.2010
Publisher
Technical university of Liberec
Location
Liberec
ISBN
978-80-7372-670-6
Book
International conference Experimental Fluid Mechanics 2010 Conference Proceedings Volume 1
Pages from–to
115–119
Pages count
4
BIBTEX
@inproceedings{BUT35365,
author="Jakub {Elcner} and Matěj {Forman} and Jan {Jedelský} and František {Lízal} and Miroslav {Jícha},
title="Numerical simulation of air flow in a realistic model of the human upper airways",
booktitle="International conference Experimental Fluid Mechanics 2010 Conference Proceedings Volume 1",
year="2010",
month="November",
pages="115--119",
publisher="Technical university of Liberec",
address="Liberec",
isbn="978-80-7372-670-6"
}