Publication detail

Investigation of Air Flow in Idealized Model of Human Respiratory Tract

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

Czech title

Vyšetřování proudění na zjednodušeném modelu dýchacího traktu

English title

Investigation of Air Flow in Idealized Model of Human Respiratory Tract

Type

journal article - other

Language

en

Original abstract

Validation of numerical simulation using experimental data is necessary prerequisite for authentication of proper use of numerical method. This article deals with comparison of velocity vectors on idealized model of human upper airways during stationary inspiration for three different breathing regimes. For the purpose of this study, the model which includes realistic geometry of mouth cavity and glottis coupled with idealized geometry of trachea and bronchial tree up to fourth generation of branching was made. Calculations were compared with experiments performed by using of Phase-Doppler Particle Anemometry (P/DPA) on identical geometry. Velocity data was compared at several points in trachea and bronchial tree. Specific air flow characteristics are documented and discussed based on results of the numerical simulation of the velocity field.

Czech abstract

Validace počítačového modelování pomocí experimentálních metod je nezbytná pro ověření správnosti použitého modelu. Předmětem této studie je srovnání proudových polí na zjednodušeném modelu horních cest dýchacích při průtoku 15, 30 a 60 l/minutu. Za tímto účelem byl vytvořen model obsahující realistickou geometrii ústní dutiny, na kterou je navázáno zjednodušenou geometrií trachey a bronchiálního stromu do čtvrté generace větvení. Výpočet je srovnáván s experimentem provedeným na totožné geometrii za použití Phase-Doppler Particle Anemometry. Srovnání je provedeno pro rychlosti v několika bodech v trachey a bronchiálním stromu.

English abstract

Validation of numerical simulation using experimental data is necessary prerequisite for authentication of proper use of numerical method. This article deals with comparison of velocity vectors on idealized model of human upper airways during stationary inspiration for three different breathing regimes. For the purpose of this study, the model which includes realistic geometry of mouth cavity and glottis coupled with idealized geometry of trachea and bronchial tree up to fourth generation of branching was made. Calculations were compared with experiments performed by using of Phase-Doppler Particle Anemometry (P/DPA) on identical geometry. Velocity data was compared at several points in trachea and bronchial tree. Specific air flow characteristics are documented and discussed based on results of the numerical simulation of the velocity field.

Keywords in Czech

Lidské plíce, Proudění, CFD

Keywords in English

Human Lungs, Air flow, CFD

RIV year

2013

Released

20.12.2013

Publisher

Association for Engineering Mechanics

Location

Brno

ISSN

1802-1484

Volume

20

Number

3/4

Pages from–to

187–194

Pages count

7

BIBTEX


@article{BUT105382,
  author="Jakub {Elcner} and František {Lízal} and Jan {Jedelský} and Miroslav {Jícha},
  title="Investigation of Air Flow in Idealized Model of Human Respiratory Tract",
  year="2013",
  volume="20",
  number="3/4",
  month="December",
  pages="187--194",
  publisher="Association for Engineering Mechanics",
  address="Brno",
  issn="1802-1484"
}