Publication detail

Surface Tension Model for High Viscosity Ratios implemented in VOF model

BOHÁČEK, J.

Original Title

Surface Tension Model for High Viscosity Ratios implemented in VOF model

English Title

Surface Tension Model for High Viscosity Ratios implemented in VOF model

Type

conference paper

Language

en

Original Abstract

In this paper, a new surface tension model suitable for Volume of Fluid (VOF) model is introduced. The VOF model was designed many years ago in order to be solved by FVM. Nowadays, it is used in most of commercial CFD packages, e.g., ANSYS FLUENT, ANSYS CFX, and has the capability to simulate surface tension effects. However, when surface tension is dominant, i.e., Capillary or Weber number is low; it gives rather spurious cur-rents that can cripple a velocity field in a whole domain. In VOF, the interface between the primary and the sec-ondary phases is tracked on a fixed grid. In reality, surface tension acts as a surface force, however, here, it must be imposed as a body force into momentum equations.

English abstract

In this paper, a new surface tension model suitable for Volume of Fluid (VOF) model is introduced. The VOF model was designed many years ago in order to be solved by FVM. Nowadays, it is used in most of commercial CFD packages, e.g., ANSYS FLUENT, ANSYS CFX, and has the capability to simulate surface tension effects. However, when surface tension is dominant, i.e., Capillary or Weber number is low; it gives rather spurious cur-rents that can cripple a velocity field in a whole domain. In VOF, the interface between the primary and the sec-ondary phases is tracked on a fixed grid. In reality, surface tension acts as a surface force, however, here, it must be imposed as a body force into momentum equations.

Keywords

surface tension, VOF model, droplet, CSF model

RIV year

2010

Released

01.09.2010

ISBN

978-80-7399-997-1

Book

Proceedings of 23rd European Conference on Liquid Atomization and Spray Systems

Pages from

51

Pages to

52

Pages count

2

URL

BibTex


@inproceedings{BUT35432,
  author="Jan {Boháček}",
  title="Surface Tension Model for High Viscosity Ratios implemented in VOF model",
  annote="In this paper, a new surface tension model suitable for Volume of Fluid (VOF) model is introduced. The VOF model was designed many years ago in order to be solved by FVM. Nowadays, it is used in most of commercial CFD packages, e.g., ANSYS FLUENT, ANSYS CFX, and has the capability to simulate surface tension effects. However, when surface tension is dominant, i.e., Capillary or Weber number is low; it gives rather spurious cur-rents that can cripple a velocity field in a whole domain. In VOF, the interface between the primary and the sec-ondary phases is tracked on a fixed grid. In reality, surface tension acts as a surface force, however, here, it must be imposed as a body force into momentum equations.",
  booktitle="Proceedings of 23rd European Conference on Liquid Atomization and Spray Systems",
  chapter="35432",
  howpublished="online",
  year="2010",
  month="september",
  pages="51--52",
  type="conference paper"
}