Publication detail

Liquid film instability model using CFD simulations

KNOTEK, S. JÍCHA, M.

Original Title

Liquid film instability model using CFD simulations

English Title

Liquid film instability model using CFD simulations

Type

conference paper

Language

Czech

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 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 in dependence on the liquid film thickness is very good.

Keywords

liquid film, instability, CFD

Key words in English

liquid film, instability, CFD

Authors

KNOTEK, S.; JÍCHA, M.

RIV year

2012

Released

26. 6. 2012

ISBN

978-80-214-4529-1

Book

Sborník příspěvků

Pages from

103

Pages to

106

Pages count

4

BibTex

@inproceedings{BUT92748,
  author="Stanislav {Knotek} and Miroslav {Jícha}",
  title="Liquid film instability model using CFD simulations",
  booktitle="Sborník příspěvků",
  year="2012",
  pages="103--106",
  isbn="978-80-214-4529-1"
}