Detail publikačního výsledku

Change of Airflow Character During Respiratory Cycle in Semi-Realistic Model of Human Tracheobronchial Tree

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

Original Title

Change of Airflow Character During Respiratory Cycle in Semi-Realistic Model of Human Tracheobronchial Tree

English Title

Change of Airflow Character During Respiratory Cycle in Semi-Realistic Model of Human Tracheobronchial Tree

Type

Paper in proceedings (conference paper)

Original Abstract

This article deals with study of airflow under breathing process, which is characteristic by unsteady behavior. Simulations provided by computational fluid dynamics (CFD) was compared with experiments performed on similar geometry of human upper airways. This geometry was represented by mouth cavity of realistic shape connected to an idealized tracheobronchial tree up to fourth generation of branching. Commercial CFD software Star-CCM+ was used to calculate airflow inside investigated geometry and method of Reynolds averaging of Navier-Stokes equations was used for subscribing the turbulent behavior through model geometry. Conditions corresponding to resting state were considered. Comparisons with experiments were provided on several points through trachea and bronchial tree and results with respect to inspiratory and respiratory part of breathing cycle was discussed.

English abstract

This article deals with study of airflow under breathing process, which is characteristic by unsteady behavior. Simulations provided by computational fluid dynamics (CFD) was compared with experiments performed on similar geometry of human upper airways. This geometry was represented by mouth cavity of realistic shape connected to an idealized tracheobronchial tree up to fourth generation of branching. Commercial CFD software Star-CCM+ was used to calculate airflow inside investigated geometry and method of Reynolds averaging of Navier-Stokes equations was used for subscribing the turbulent behavior through model geometry. Conditions corresponding to resting state were considered. Comparisons with experiments were provided on several points through trachea and bronchial tree and results with respect to inspiratory and respiratory part of breathing cycle was discussed.

Keywords

Breathing cycle, lungs, Air-flow, CFD, Bronchial tree

Key words in English

Breathing cycle, lungs, Air-flow, CFD, Bronchial tree

Authors

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

RIV year

2017

Released

27.04.2016

Publisher

University of Žilina

Location

Žilina

ISBN

978-80-554-1193-4

Book

The Application of Experimental and Numerical methods in Fluid Mechanics and Energy 2016

Pages from

37

Pages to

40

Pages count

4

Full text in the Digital Library

http://hdl.handle.net/

BibTex

@inproceedings{BUT129900,
  author="Jakub {Elcner} and František {Lízal} and Jan {Jedelský} and Miroslav {Jícha}",
  title="Change of Airflow Character During Respiratory Cycle in Semi-Realistic Model of Human Tracheobronchial Tree",
  booktitle="The Application of Experimental and Numerical methods in Fluid Mechanics and Energy 2016",
  year="2016",
  pages="37--40",
  publisher="University of Žilina",
  address="Žilina",
  isbn="978-80-554-1193-4"
}