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A model for drop size prediction during cross-flow emulsification

Timgren, Anna LU ; Trägårdh, Gun LU and Trägårdh, Christian LU (2010) In Chemical Engineering Research & Design 88(2). p.229-238
Abstract
The formation of drops is a topic of great interest in a wide variety of engineering applications, such as membrane emulsification. In order to develop an improved force balance model that is capable of predicting the final size of the detached drop, the formation of drops into a cross-flowing continuous phase has been studied with computational fluid dynamics (CFD). The force balance developed takes into account the drop deformation that occurs as the drop approaches detachment. The results given by the model have been compared with CFD simulations, and the drop diameters agree within 10%, except at low wall shear stresses. The model has also been compared with experimental results on drop formation using various membranes, cross-flow... (More)
The formation of drops is a topic of great interest in a wide variety of engineering applications, such as membrane emulsification. In order to develop an improved force balance model that is capable of predicting the final size of the detached drop, the formation of drops into a cross-flowing continuous phase has been studied with computational fluid dynamics (CFD). The force balance developed takes into account the drop deformation that occurs as the drop approaches detachment. The results given by the model have been compared with CFD simulations, and the drop diameters agree within 10%, except at low wall shear stresses. The model has also been compared with experimental results on drop formation using various membranes, cross-flow velocities and surfactants. The difference between the model and experimental results is mainly due to the adsorption of surfactants onto the drop interface and the shape of the membrane pores. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Computational fluid dynamics (CFD), Interfacial tension, Force balance model (FBM), Drop formation, Membrane emulsification
in
Chemical Engineering Research & Design
volume
88
issue
2
pages
229 - 238
publisher
IChemE
external identifiers
  • wos:000274751900010
  • scopus:74249086861
ISSN
0263-8762
DOI
10.1016/j.cherd.2009.08.005
language
English
LU publication?
yes
id
e008774b-5057-4fdd-a6ce-1e2479aaa93c (old id 1474196)
date added to LUP
2009-09-18 11:59:32
date last changed
2018-05-29 09:57:06
@article{e008774b-5057-4fdd-a6ce-1e2479aaa93c,
  abstract     = {The formation of drops is a topic of great interest in a wide variety of engineering applications, such as membrane emulsification. In order to develop an improved force balance model that is capable of predicting the final size of the detached drop, the formation of drops into a cross-flowing continuous phase has been studied with computational fluid dynamics (CFD). The force balance developed takes into account the drop deformation that occurs as the drop approaches detachment. The results given by the model have been compared with CFD simulations, and the drop diameters agree within 10%, except at low wall shear stresses. The model has also been compared with experimental results on drop formation using various membranes, cross-flow velocities and surfactants. The difference between the model and experimental results is mainly due to the adsorption of surfactants onto the drop interface and the shape of the membrane pores.},
  author       = {Timgren, Anna and Trägårdh, Gun and Trägårdh, Christian},
  issn         = {0263-8762},
  keyword      = {Computational fluid dynamics (CFD),Interfacial tension,Force balance model (FBM),Drop formation,Membrane emulsification},
  language     = {eng},
  number       = {2},
  pages        = {229--238},
  publisher    = {IChemE},
  series       = {Chemical Engineering Research & Design},
  title        = {A model for drop size prediction during cross-flow emulsification},
  url          = {http://dx.doi.org/10.1016/j.cherd.2009.08.005},
  volume       = {88},
  year         = {2010},
}