Detail publikace

Comparison of turbulent models in the case of a constricted tube

ELCNER, J. LÍZAL, F. JÍCHA, M.

Originální název

Comparison of turbulent models in the case of a constricted tube

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

angličtina

Originální abstrakt

The validation of a proper solution is an indispensable phase of every numerical simulation. Nowadays, many turbulent models are available, whose application leads to slightly different solution of flow behaviour depending on the boundary conditions of a specific problem. It is essential to select the proper turbulence model appropriate for the given situation. The aim of this study is to select the most suitable two-equation eddy-viscosity model, which can be further used during calculations of airflow in human airways. For this purpose, geometry of a constricted tube with well-documented experimental measurements was chosen. The flow in the constricted tube was calculated using Spallart-Almaras, k-omega, k-epsilon and SST model approach using commercial software. The outcome of the comparison is a choice of the suitable model which is capable of simulating the transition of the boundary layer from laminar to turbulent flow. This transition typically arises in the upper part of the respiratory system, where the airways are constricted, specifically in the area, where the oral cavity continues through the glottis to trachea. The simulations were performed in a commercial solver Star-CCM+.

Klíčová slova

CFD; Comparison; Constricted tube; Flow

Autoři

ELCNER, J.; LÍZAL, F.; JÍCHA, M.

Vydáno

15. 11. 2016

Nakladatel

EDP Sciences

ISSN

2100-014X

Periodikum

EPJ Web of Conferences

Ročník

143

Stát

Francouzská republika

Strany od

1

Strany do

4

Strany počet

4

URL

https://www.epj-conferences.org/articles/epjconf/abs/2017/12/epjconf_efm2017_02020/epjconf_efm2017_02020.html

Plný text v Digitální knihovně

http://hdl.handle.net/11012/70125

BibTex

@inproceedings{BUT131514,
  author="Jakub {Elcner} and František {Lízal} and Miroslav {Jícha}",
  title="Comparison of turbulent models in the case of a constricted tube",
  booktitle="EPJ Web of Conferences",
  year="2016",
  journal="EPJ Web of Conferences",
  volume="143",
  number="1",
  pages="1--4",
  publisher="EDP Sciences",
  doi="10.1051/epjconf/201714302020",
  issn="2100-014X",
  url="https://www.epj-conferences.org/articles/epjconf/abs/2017/12/epjconf_efm2017_02020/epjconf_efm2017_02020.html"
}