Numerical Investigation of inspiratory airflow in a realistic model of the human tracheobronchial airways

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F18%3APU130341" target="_blank" >RIV/00216305:26210/18:PU130341 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Numerical Investigation of inspiratory airflow in a realistic model of the human tracheobronchial airways

Popis výsledku v původním jazyce

This study deals with the results of numerical simulations using computational fluid dynamics and a comparison with experiments performed with phase Doppler anemometry. The simulations and experiments were conducted in a realistic model of the human airways, which consist of the throat, trachea and tracheobronchial tree up to the fourth generation. An inspiratory part of breathing cycle was used with tidal volume of 0.5L, which correspond to a sedentary regime. The length of the inspiratory part of cycle was 2 s. As a boundary condition for the CFD simulations, experimentally obtained flow rate distribution in 10 terminal airways was used with zero pressure resistance at the throat inlet. Commercial CFD code (CD-Adapco’s (Siemens) StarCCM+) was used with an SST k-ω low-Reynolds Number RANS model. The total number of polyhedral control volumes was 2.6 million with a time step of 0.001 s. Comparisons were performed at several points in eight cross sections selected according to experiments in the trache

Název v anglickém jazyce

Numerical Investigation of inspiratory airflow in a realistic model of the human tracheobronchial airways

Popis výsledku anglicky

This study deals with the results of numerical simulations using computational fluid dynamics and a comparison with experiments performed with phase Doppler anemometry. The simulations and experiments were conducted in a realistic model of the human airways, which consist of the throat, trachea and tracheobronchial tree up to the fourth generation. An inspiratory part of breathing cycle was used with tidal volume of 0.5L, which correspond to a sedentary regime. The length of the inspiratory part of cycle was 2 s. As a boundary condition for the CFD simulations, experimentally obtained flow rate distribution in 10 terminal airways was used with zero pressure resistance at the throat inlet. Commercial CFD code (CD-Adapco’s (Siemens) StarCCM+) was used with an SST k-ω low-Reynolds Number RANS model. The total number of polyhedral control volumes was 2.6 million with a time step of 0.001 s. Comparisons were performed at several points in eight cross sections selected according to experiments in the trache

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

20301 - Mechanical engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2018

Kód důvěrnosti údajů

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