Publication detail
Liquid film instability model using CFD simulations
KNOTEK, S. JÍCHA, M.
Czech title
Liquid film instability model using CFD simulations
English title
Liquid film instability model using CFD simulations
Type
conference paper
Language
cs
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.
Czech 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 in Czech
liquid film, instability, CFD
Keywords in English
liquid film, instability, CFD
RIV year
2012
Released
26.06.2012
ISBN
978-80-214-4529-1
Book
Sborník příspěvků
Pages from–to
103–106
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",
month="June",
pages="103--106",
isbn="978-80-214-4529-1"
}