Publication result detail

Thick liquid film instability model using CFD simulations

KNOTEK, S.; JÍCHA, M.

Original Title

Thick liquid film instability model using CFD simulations

English Title

Thick liquid film instability model using CFD simulations

Type

Peer-reviewed article not indexed in WoS or Scopus

Original Abstract

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.

English abstract

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.

Keywords

liquid film, instability, waves, CFD

Key words in English

liquid film, instability, waves, CFD

Authors

KNOTEK, S.; JÍCHA, M.

RIV year

2014

Released

01.12.2013

ISBN

1802-1484

Periodical

Engineering Mechanics

Volume

20

Number

3/4

State

Czech Republic

Pages from

247

Pages to

254

Pages count

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"
}