Publication detail

Study of airflow in the trachea of idealized model of human tracheobronchial airways during breathing cycle

ELCNER, J. LÍZAL, F. JEDELSKÝ, J. JÍCHA, M.

Czech title

Studium proudění v trachei idealizovaného modelu lidských dýchacích cest, během respiračního cyklu

English title

Study of airflow in the trachea of idealized model of human tracheobronchial airways during breathing cycle

Type

conference paper

Language

en

Original abstract

Article deals with numerical simulations and its verification by experiments in trachea of idealized geometry of tracheobronchial airways by using unsteady RANS approach. Respiratory cycle was simulated by sinusoidal function under period of 4 seconds and tidal volume of 0.5 litres of air which corresponds to breathing under resting condition. Results was compared with experiments measured by laser-Doppler velocimeter in eight points on four cross sections on trachea. Model consists of mouth cavity, larynx and tracheobronchial tree up to fourth generation of branching.

Czech abstract

Článek se zabývá numerickými simulacemi v trachei idealizované geometrie dýchacích cest a jejich ověřením, pomocí experimentů. Simulace byly provedeny metodou RANS. Respirační cyklus byl simulován pomocí sinové funkce s periodou 4 vteřiny a vdechovaným objemem 0,5 litrů, což odpovídá dýchání při klidovém režimu. Výsledky byly porovnány s experimenty provedenými metodou laserové Dopplerovské anemometrie ve čtyřech řezech napříč tracheou. Model sestával z ústní dutiny, hrtanu a idealizovaného tracheobronchiálního stromu do čtvrté generace větvení.

English abstract

Article deals with numerical simulations and its verification by experiments in trachea of idealized geometry of tracheobronchial airways by using unsteady RANS approach. Respiratory cycle was simulated by sinusoidal function under period of 4 seconds and tidal volume of 0.5 litres of air which corresponds to breathing under resting condition. Results was compared with experiments measured by laser-Doppler velocimeter in eight points on four cross sections on trachea. Model consists of mouth cavity, larynx and tracheobronchial tree up to fourth generation of branching.

Keywords in English

Airflow, CFD, lungs

RIV year

2014

Released

18.11.2014

Publisher

EDP Sciences

Location

Český Krumlov

ISSN

2100-014X

Book

EPJ Web of Conferences

Volume

92

Number

2015

Pages from–to

1–6

Pages count

6

BIBTEX


@inproceedings{BUT111685,
  author="Jakub {Elcner} and František {Lízal} and Jan {Jedelský} and Miroslav {Jícha},
  title="Study of airflow in the trachea of idealized model of human tracheobronchial airways during breathing cycle",
  booktitle="EPJ Web of Conferences",
  year="2014",
  volume="92",
  number="2015",
  month="November",
  pages="1--6",
  publisher="EDP Sciences",
  address="Český Krumlov",
  issn="2100-014X"
}