Publication detail

Numerical simulation of air flow in a model of lungs with mouth cavity

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

Czech title

Numerická simulace proudění v modelu plic s ústní dutinou

English title

Numerical simulation of air flow in a model of lungs with mouth cavity

Type

conference paper

Language

en

Original abstract

The air flow in a realistic geometry of human lung extended of mouth cavity is simulated with computational flow dynamics approach as stationary inspiration. Geometry used for the simulation includes mouth cavity, larynx, trachea and bronchial tree to the seventh generation of branching. Unsteady RANS approach were used for the air flow simulation. Velocities corresponding to 15, 30 and 60 l/min of flow rate were set as boundary layer at the inlet to the model. These flow rates are frequently used for representation of human activity with context of breathing. Physical phenomenons in various part of model during this different flow rates were discussed with respect for future investigation of particle deposition.

Czech abstract

Proudění v realistické geometrii lidských plic rozšířených o ústní dutinu je simulováno pomocí CFD jako stacionární nádech. Geometrie použitá při simulaci obsahuje ústní dutinu, hrtan, tracheu a bronchiální strom do sedmé generace větvení. Pro modelování proudových polí byl využit nestacionární RANS model. Jako okrajová podmínka byly použity rychlosti odpovídající průtoku 15, 30 a 60 l/min. Tyto objemové toky jsou často používanými režimy při popisu lidské aktivity ve vztahu k dýchání. V článku byly diskutovány fyzikální děje v různých částech modelu se zaměřením na budoucí výzkum depozice částic.

English abstract

The air flow in a realistic geometry of human lung extended of mouth cavity is simulated with computational flow dynamics approach as stationary inspiration. Geometry used for the simulation includes mouth cavity, larynx, trachea and bronchial tree to the seventh generation of branching. Unsteady RANS approach were used for the air flow simulation. Velocities corresponding to 15, 30 and 60 l/min of flow rate were set as boundary layer at the inlet to the model. These flow rates are frequently used for representation of human activity with context of breathing. Physical phenomenons in various part of model during this different flow rates were discussed with respect for future investigation of particle deposition.

Keywords in Czech

Plíce, proudění, CFD

Keywords in English

Lungs, air flow, CFD

RIV year

2011

Released

22.11.2011

Publisher

EDP Sciences

Location

Jičín

ISBN

978-80-7372-784-0

ISSN

2100-014X

Book

EPJ Web of Conferences

Volume

25

Number

1

Pages from–to

1–5

Pages count

5

BIBTEX


@inproceedings{BUT75213,
  author="Jakub {Elcner} and František {Lízal} and Jan {Jedelský} and Miroslav {Jícha},
  title="Numerical simulation of air flow in a model of lungs with mouth cavity",
  booktitle="EPJ Web of Conferences",
  year="2011",
  volume="25",
  number="1",
  month="November",
  pages="1--5",
  publisher="EDP Sciences",
  address="Jičín",
  isbn="978-80-7372-784-0",
  issn="2100-014X"
}