Detail publikačního výsledku

Thick liquid film instability model using CFD simulations

KNOTEK, S.; JÍCHA, M.

Originální název

Thick liquid film instability model using CFD simulations

Anglický název

Thick liquid film instability model using CFD simulations

Druh

Článek recenzovaný mimo WoS a Scopus

Originální abstrakt

The article presents a liquid film instability model designed using results of the set of CFD simulations. The governing equations of the model are derived using a linear equation of motion. The stability analysis is carried out by imposing a liquid surface disturbance which growth rate is investigated in dependence on the geometrical and physical configuration. The gas effect parameters, which are decisive variables in the model, are derived using results of the set of CFD simulations of turbulent flow in channel with wavy surface. The agreement between predicted and measured critical gas velocities and wavelengths in dependence on the liquid film thickness is very good.

Anglický abstrakt

The article presents a liquid film instability model designed using results of the set of CFD simulations. The governing equations of the model are derived using a linear equation of motion. The stability analysis is carried out by imposing a liquid surface disturbance which growth rate is investigated in dependence on the geometrical and physical configuration. The gas effect parameters, which are decisive variables in the model, are derived using results of the set of CFD simulations of turbulent flow in channel with wavy surface. The agreement between predicted and measured critical gas velocities and wavelengths in dependence on the liquid film thickness is very good.

Klíčová slova

liquid film, instability, waves, CFD

Klíčová slova v angličtině

liquid film, instability, waves, CFD

Autoři

KNOTEK, S.; JÍCHA, M.

Rok RIV

2014

Vydáno

01.12.2013

ISSN

1802-1484

Periodikum

Engineering Mechanics

Svazek

20

Číslo

3/4

Stát

Česká republika

Strany od

247

Strany do

254

Strany počet

8

URL

http://www.engineeringmechanics.cz/pdf/20_3_247.pdf

BibTex

@article{BUT105617,
  author="Stanislav {Knotek} and Miroslav {Jícha}",
  title="Thick liquid film instability model using CFD simulations",
  journal="Engineering Mechanics",
  year="2013",
  volume="20",
  number="3/4",
  pages="247--254",
  issn="1802-1484",
  url="http://www.engineeringmechanics.cz/pdf/20_3_247.pdf"
}