Publication detail

The influence of boundary conditions to the flow through model of upper part of human respiratory system

ELCNER, J. CHOVANCOVÁ, M. JÍCHA, M.

Original Title

The influence of boundary conditions to the flow through model of upper part of human respiratory system

English Title

The influence of boundary conditions to the flow through model of upper part of human respiratory system

Type

conference paper

Language

en

Original Abstract

Respiratory system represents relatively large system of gradually branching channels which can be hardly solved by numerical simulations. Nowadays, research in this area is focused to solve problems in selected parts of respiratory tract rather than whole system. This simplification comes with problem of accurate assessment of boundary conditions on model geometry. Geometry used on Department of Thermomechanics and Environmental Engineering on Brno University of Technology consists of mouth cavity, larynx, trachea and bronchial tree up to seventh generation of branching. This article is focused on comparison of two different settings of boundary conditions steady inspiration during light activity regime. First set of boundary conditions represents commonly used setting with zero pressure resistance on outlet from the model and second method deals with more realistic assumption, where incomplete 3D geometry is coupled with the rest of bronchial tree described by 1D equations and also correlated by the amount of air, which flows in specific lung lobe. The article observed differences in individual mass flow through the model branches under different conditions and its influence on the flow structures.

English abstract

Respiratory system represents relatively large system of gradually branching channels which can be hardly solved by numerical simulations. Nowadays, research in this area is focused to solve problems in selected parts of respiratory tract rather than whole system. This simplification comes with problem of accurate assessment of boundary conditions on model geometry. Geometry used on Department of Thermomechanics and Environmental Engineering on Brno University of Technology consists of mouth cavity, larynx, trachea and bronchial tree up to seventh generation of branching. This article is focused on comparison of two different settings of boundary conditions steady inspiration during light activity regime. First set of boundary conditions represents commonly used setting with zero pressure resistance on outlet from the model and second method deals with more realistic assumption, where incomplete 3D geometry is coupled with the rest of bronchial tree described by 1D equations and also correlated by the amount of air, which flows in specific lung lobe. The article observed differences in individual mass flow through the model branches under different conditions and its influence on the flow structures.

Keywords

CFD, Lung, Airflow

RIV year

2013

Released

19.11.2013

Publisher

EDP Sciences

Location

Liberec

ISBN

978-80-260-5375-0

Book

EPJ Web of Conferences

Pages from

1

Pages to

4

Pages count

4

URL

Full text in the Digital Library

Documents

BibTex


@inproceedings{BUT104698,
  author="Jakub {Elcner} and Michaela {Chovancová} and Miroslav {Jícha}",
  title="The influence of boundary conditions to the flow through model of upper part of human respiratory system",
  annote="Respiratory system represents relatively large system of gradually branching channels which can be hardly solved by numerical simulations. Nowadays, research in this area is focused to solve problems in selected parts of respiratory tract rather than whole system. This simplification comes with problem of accurate assessment of boundary conditions on model geometry. Geometry used on Department of Thermomechanics and Environmental Engineering on Brno University of Technology consists of mouth cavity, larynx, trachea and bronchial tree up to seventh generation of branching. This article is focused on comparison of two different settings of boundary conditions steady inspiration during light activity regime. First set of boundary conditions represents commonly used setting with zero pressure resistance on outlet from the model and second method deals with more realistic assumption, where incomplete 3D geometry is coupled with the rest of bronchial tree described by 1D equations and also correlated by the amount of air, which flows in specific lung lobe. The article observed differences in individual mass flow through the model branches under different conditions and its influence on the flow structures.",
  address="EDP Sciences",
  booktitle="EPJ Web of Conferences",
  chapter="104698",
  doi="10.1051/epjconf/20146702025",
  howpublished="online",
  institution="EDP Sciences",
  number="1",
  year="2013",
  month="november",
  pages="1--4",
  publisher="EDP Sciences",
  type="conference paper"
}