Publication detail

Flow distribution and velocity profiles in realistic human airway model

JEDELSKÝ, J. LÍZAL, F. JÍCHA, M.

Original Title

Flow distribution and velocity profiles in realistic human airway model

English Title

Flow distribution and velocity profiles in realistic human airway model

Type

conference paper

Language

en

Original Abstract

Comparisons of published studies done on idealized lung geometry with investigations made on more realistic models have shown an influence of complex actual geometry on flow and particle transport. To enable optical measurement of aerosol transport with air as working fluid, we created realistic thin-walled transparent airway model. The non-symmetric bifurcation model reflects real non-planar lung geometry and spans from throat to 3rd-4th generation of bronchi. Two realistic airway models were used for study of flow distribution into particular lung branches at three steady and three oscillatory flow regimes. Significant differences were found in flow rate distribution into the individual branches of each model and also between both the models. Velocity of aerosol in trachea was studied using Phase Doppler Analyzer. Mean axial velocity followed the harmonic course of generated flow. Turbulence level was found lower in the inspiration then in the expiration part of the cycle.

English abstract

Comparisons of published studies done on idealized lung geometry with investigations made on more realistic models have shown an influence of complex actual geometry on flow and particle transport. To enable optical measurement of aerosol transport with air as working fluid, we created realistic thin-walled transparent airway model. The non-symmetric bifurcation model reflects real non-planar lung geometry and spans from throat to 3rd-4th generation of bronchi. Two realistic airway models were used for study of flow distribution into particular lung branches at three steady and three oscillatory flow regimes. Significant differences were found in flow rate distribution into the individual branches of each model and also between both the models. Velocity of aerosol in trachea was studied using Phase Doppler Analyzer. Mean axial velocity followed the harmonic course of generated flow. Turbulence level was found lower in the inspiration then in the expiration part of the cycle.

Keywords

Flow distribution, flow velocity, realistic model, human airway

RIV year

2009

Released

02.06.2009

Publisher

Institute of Hydrodynamics ASCR

Location

Praha

ISBN

978-80-87117-06-4

Book

Sborník XXIII. Sympozia o anemometrii

Pages from

1

Pages to

9

Pages count

9

BibTex


@inproceedings{BUT32053,
  author="Jan {Jedelský} and František {Lízal} and Miroslav {Jícha}",
  title="Flow distribution and velocity profiles in realistic human airway model",
  annote="Comparisons of published studies done on idealized lung geometry with investigations made on more realistic models have shown an influence of complex actual geometry on flow and particle transport. To enable optical measurement of aerosol transport with air as working fluid, we created realistic thin-walled transparent airway model. The non-symmetric bifurcation model reflects real non-planar lung geometry and spans from throat to 3rd-4th generation of bronchi.
Two realistic airway models were used for study of flow distribution into particular lung branches at three steady and three oscillatory flow regimes. Significant differences were found in flow rate distribution into the individual branches of each model and also between both the models.
Velocity of aerosol in trachea was studied using Phase Doppler Analyzer. Mean axial velocity followed the harmonic course of generated flow. Turbulence level was found lower in the inspiration then in the expiration part of the cycle.",
  address="Institute of Hydrodynamics ASCR",
  booktitle="Sborník XXIII. Sympozia o anemometrii",
  chapter="32053",
  howpublished="print",
  institution="Institute of Hydrodynamics ASCR",
  year="2009",
  month="june",
  pages="1--9",
  publisher="Institute of Hydrodynamics ASCR",
  type="conference paper"
}