Advanced

Assessment of volume of fluid and immersed boundary methods for droplet computations

Lörstad, Daniel LU ; Francois, M; Shyy, W and Fuchs, Laszlo LU (2004) In International Journal for Numerical Methods in Fluids 46(2). p.109-125
Abstract
The volume of fluid (VOF) and immersed boundary (IB) methods are two popular computational techniques for multi-fluid dynamics. To help shed light on the performance of both techniques, we present accuracy assessment, which includes interfacial geometry, detailed and global fluid flow characteristics, and computational robustness. The investigation includes the simulations of a droplet under static equilibrium as a limiting test case and a droplet rising due to gravity for Re less than or equal to 1000. Surface tension force models are key issues in both VOF and IB and alternative treatments are examined resulting in improved solution accuracy. A refined curvature model for VOF is also presented. With the newly developed interfacial... (More)
The volume of fluid (VOF) and immersed boundary (IB) methods are two popular computational techniques for multi-fluid dynamics. To help shed light on the performance of both techniques, we present accuracy assessment, which includes interfacial geometry, detailed and global fluid flow characteristics, and computational robustness. The investigation includes the simulations of a droplet under static equilibrium as a limiting test case and a droplet rising due to gravity for Re less than or equal to 1000. Surface tension force models are key issues in both VOF and IB and alternative treatments are examined resulting in improved solution accuracy. A refined curvature model for VOF is also presented. With the newly developed interfacial treatments incorporated, both IB and VOF perform comparably well for the droplet dynamics under different flow parameters and fluid properties. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
VOF, immersed boundary, volume of fluid, interfacial flow, surface tension, IB
in
International Journal for Numerical Methods in Fluids
volume
46
issue
2
pages
109 - 125
publisher
John Wiley & Sons
external identifiers
  • wos:000223581500001
  • scopus:4344681905
ISSN
1097-0363
DOI
10.1002/fld.746
language
English
LU publication?
yes
id
70c1b964-c672-4fe7-bcea-c80af546ea0b (old id 268542)
date added to LUP
2007-08-03 12:22:29
date last changed
2017-11-05 03:38:46
@article{70c1b964-c672-4fe7-bcea-c80af546ea0b,
  abstract     = {The volume of fluid (VOF) and immersed boundary (IB) methods are two popular computational techniques for multi-fluid dynamics. To help shed light on the performance of both techniques, we present accuracy assessment, which includes interfacial geometry, detailed and global fluid flow characteristics, and computational robustness. The investigation includes the simulations of a droplet under static equilibrium as a limiting test case and a droplet rising due to gravity for Re less than or equal to 1000. Surface tension force models are key issues in both VOF and IB and alternative treatments are examined resulting in improved solution accuracy. A refined curvature model for VOF is also presented. With the newly developed interfacial treatments incorporated, both IB and VOF perform comparably well for the droplet dynamics under different flow parameters and fluid properties.},
  author       = {Lörstad, Daniel and Francois, M and Shyy, W and Fuchs, Laszlo},
  issn         = {1097-0363},
  keyword      = {VOF,immersed boundary,volume of fluid,interfacial flow,surface tension,IB},
  language     = {eng},
  number       = {2},
  pages        = {109--125},
  publisher    = {John Wiley & Sons},
  series       = {International Journal for Numerical Methods in Fluids},
  title        = {Assessment of volume of fluid and immersed boundary methods for droplet computations},
  url          = {http://dx.doi.org/10.1002/fld.746},
  volume       = {46},
  year         = {2004},
}