Lattice Boltzmann Simulation of the Air Flow Through the Children Respiratory Tract

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F21%3APU143519" target="_blank" >RIV/00216305:26210/21:PU143519 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.epj-conferences.org/articles/epjconf/abs/2022/08/epjconf_efm2022_01030/epjconf_efm2022_01030.html" target="_blank" >https://www.epj-conferences.org/articles/epjconf/abs/2022/08/epjconf_efm2022_01030/epjconf_efm2022_01030.html</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/epjconf/202226401030" target="_blank" >10.1051/epjconf/202226401030</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Lattice Boltzmann Simulation of the Air Flow Through the Children Respiratory Tract

Popis výsledku v původním jazyce

Aerosol particles like dust involved in the air can pass through the respiratory tract and can be de- posited there. The long-term deposition of fine solid particles in the lower airways can stimulate lung diseases. In contrary, for the healing of certain lung diseases, the delivering of medicament’s to the lower airways is important. Computational Fluid Dynamics (CFD) enables to simulate the flow field and the particles deposi- tion in the lungs. By this method, it is possible to identify the probability of reaching particles into the lower airways through the tracheo-bronchial tree. In this paper, the flow field in the child lungs (5-year-old) in a constant sedentary breathing regime was simulated using the Lattice Boltzmann Method (LBM) with the LES Smagorinsky turbulence model. To verify the calculated velocities by LBM in OpenLB software, the finite vol- ume RANS simulation in Star-CCM+ was performed. The results showed the good agreement in the upper part of the airways. Some discrepancies were found in the lower part. Nevertheless, LBM and OpenLB were proven to be a capable tool to solve the air flow through the respiratory tract and will be used for particle deposition.

Název v anglickém jazyce

Lattice Boltzmann Simulation of the Air Flow Through the Children Respiratory Tract

Popis výsledku anglicky

Aerosol particles like dust involved in the air can pass through the respiratory tract and can be de- posited there. The long-term deposition of fine solid particles in the lower airways can stimulate lung diseases. In contrary, for the healing of certain lung diseases, the delivering of medicament’s to the lower airways is important. Computational Fluid Dynamics (CFD) enables to simulate the flow field and the particles deposi- tion in the lungs. By this method, it is possible to identify the probability of reaching particles into the lower airways through the tracheo-bronchial tree. In this paper, the flow field in the child lungs (5-year-old) in a constant sedentary breathing regime was simulated using the Lattice Boltzmann Method (LBM) with the LES Smagorinsky turbulence model. To verify the calculated velocities by LBM in OpenLB software, the finite vol- ume RANS simulation in Star-CCM+ was performed. The results showed the good agreement in the upper part of the airways. Some discrepancies were found in the lower part. Nevertheless, LBM and OpenLB were proven to be a capable tool to solve the air flow through the respiratory tract and will be used for particle deposition.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

<a href="/cs/project/GA20-27653S" target="_blank" >GA20-27653S: Vliv vývoje plic u novorozenců a dětí na charakteristiky proudění a depozici aerosolů – výpočtové modelování a experimentální validace</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

EFM21 – 15th International Conference “Experimental Fluid Mechanics 2021"

ISBN

—

ISSN

2100-014X

e-ISSN

—

Počet stran výsledku

6

Strana od-do

1-6

Název nakladatele

EDP Sciences

Místo vydání

Liberec

Místo konání akce

Liberec

Datum konání akce

23. 11. 2021

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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