Publication detail

TRANSPORT AND DEPOSITION OF AEROSOLS IN HUMAN AIRWAYS

KATOLICKÝ, J. FORMAN, M. JÍCHA, M.

Original Title

TRANSPORT AND DEPOSITION OF AEROSOLS IN HUMAN AIRWAYS

English Title

TRANSPORT AND DEPOSITION OF AEROSOLS IN HUMAN AIRWAYS

Type

conference paper

Language

en

Original Abstract

A numerical model of aerosol transport in human airways is presented that contains 6 to 9 bifurcations and about 100 terminations. The model was acquired from a CT scan of a living person and contains oral/nasal cavity, thoracic and lower airways. Two breathing activities are modeled: 1) Resting conditions with a tidal volume 0,5liter, the minute ventilation 15 l/min and the period 4 sec/cycle and 2) Heavy activity (maximum exercise) with the idal volume 3.33 liter, the minute ventilation 120 l/min and the period 1.25 sec/cycle. The inspiration/expiration cycle was modelled following the sinusoidal function. Euler-Lagrange approach was used to model aerosol transport and deposition in the airways. The total concentration of aerosol was assumed 50ěg/m3 divided into three classes PM10, PM2.5 a PM 1 with appropriate fractions 25ěg/m3, 9 ěg/m3 and 16 ěg/m3, respectively. Results of the odeling show the velocity field in several locations along the airways in different time steps of inspiration and expiration phases as well as deposition of individual aerosol sizes in the individual segments of the human airways.

English abstract

A numerical model of aerosol transport in human airways is presented that contains 6 to 9 bifurcations and about 100 terminations. The model was acquired from a CT scan of a living person and contains oral/nasal cavity, thoracic and lower airways. Two breathing activities are modeled: 1) Resting conditions with a tidal volume 0,5liter, the minute ventilation 15 l/min and the period 4 sec/cycle and 2) Heavy activity (maximum exercise) with the idal volume 3.33 liter, the minute ventilation 120 l/min and the period 1.25 sec/cycle. The inspiration/expiration cycle was modelled following the sinusoidal function. Euler-Lagrange approach was used to model aerosol transport and deposition in the airways. The total concentration of aerosol was assumed 50ěg/m3 divided into three classes PM10, PM2.5 a PM 1 with appropriate fractions 25ěg/m3, 9 ěg/m3 and 16 ěg/m3, respectively. Results of the odeling show the velocity field in several locations along the airways in different time steps of inspiration and expiration phases as well as deposition of individual aerosol sizes in the individual segments of the human airways.

Keywords

AEROSOLS, HUMAN AIRWAYS

RIV year

2007

Released

01.07.2007

Location

SunCity

ISBN

978-1-86854-643-5

Book

Proceedings of 5th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics

Pages from

31

Pages to

35

Pages count

5

BibTex


@inproceedings{BUT22645,
  author="Jaroslav {Katolický} and Matěj {Forman} and Miroslav {Jícha}",
  title="TRANSPORT AND DEPOSITION OF AEROSOLS IN HUMAN AIRWAYS",
  annote="A numerical model of aerosol transport in human airways is presented that contains 6 to 9 bifurcations and about 100 terminations. The model was acquired from a CT scan of a living person and contains oral/nasal cavity, thoracic and lower airways. Two breathing activities are modeled: 1) Resting conditions with a tidal volume 0,5liter, the minute ventilation 15 l/min and the period 4 sec/cycle and 2) Heavy activity (maximum exercise) with the idal volume 3.33 liter, the minute ventilation 120 l/min and the period 1.25 sec/cycle. The inspiration/expiration cycle was modelled following the sinusoidal function. Euler-Lagrange approach was used to model aerosol transport and deposition in the airways. The total concentration of aerosol was assumed 50ěg/m3 divided into three classes PM10, PM2.5 a PM 1 with appropriate fractions 25ěg/m3, 9 ěg/m3 and 16 ěg/m3, respectively. Results of the odeling show the velocity field in several locations along the airways in different time steps of inspiration and expiration phases as well as deposition of individual aerosol sizes in the individual segments of the human airways.",
  booktitle="Proceedings of 5th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics",
  chapter="22645",
  year="2007",
  month="july",
  pages="31--35",
  type="conference paper"
}