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CFD modelling of drop formation in a liquid-liquid system

Timgren, Anna LU ; Trägårdh, Gun LU and Trägårdh, Christian LU (2007) 6th International Conference on Multiphase Flow, 2007 In [Host publication title missing] p.1-8
Abstract
The formation of an oil drop from a single capillary in a continuous phase flowing perpendicular to the capillary opening has been studied numerically. The shear stress at the interface of the forming drop, the angular velocity inside the drop and the pressure field around the drop have been determined in a cross section of the drop formation area. The results show a maximum pressure in the continuous phase near the stagnation point and a maximum shear stress in both phases nearer the top of the forming drop. The lowest pressures were found behind the top of the drop, where the surrounding flow starts to separate from the interface of the drop. The shear stress outside the drop causes a drag which, together with the drag originated from... (More)
The formation of an oil drop from a single capillary in a continuous phase flowing perpendicular to the capillary opening has been studied numerically. The shear stress at the interface of the forming drop, the angular velocity inside the drop and the pressure field around the drop have been determined in a cross section of the drop formation area. The results show a maximum pressure in the continuous phase near the stagnation point and a maximum shear stress in both phases nearer the top of the forming drop. The lowest pressures were found behind the top of the drop, where the surrounding flow starts to separate from the interface of the drop. The shear stress outside the drop causes a drag which, together with the drag originated from the pressure field around the drop, promotes drop detachment. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
VOF, Interfacial shear, Emulsification
in
[Host publication title missing]
editor
Sommerfeld, Martin
pages
1 - 8
publisher
6th International Conference on Multiphase Flow
conference name
6th International Conference on Multiphase Flow, 2007
ISBN
978-3-86010-913-7
language
English
LU publication?
yes
id
980d0730-57e3-4b99-8c17-a0085cd516e3 (old id 602182)
date added to LUP
2007-12-19 14:32:17
date last changed
2016-06-30 16:29:38
@misc{980d0730-57e3-4b99-8c17-a0085cd516e3,
  abstract     = {The formation of an oil drop from a single capillary in a continuous phase flowing perpendicular to the capillary opening has been studied numerically. The shear stress at the interface of the forming drop, the angular velocity inside the drop and the pressure field around the drop have been determined in a cross section of the drop formation area. The results show a maximum pressure in the continuous phase near the stagnation point and a maximum shear stress in both phases nearer the top of the forming drop. The lowest pressures were found behind the top of the drop, where the surrounding flow starts to separate from the interface of the drop. The shear stress outside the drop causes a drag which, together with the drag originated from the pressure field around the drop, promotes drop detachment.},
  author       = {Timgren, Anna and Trägårdh, Gun and Trägårdh, Christian},
  editor       = {Sommerfeld, Martin},
  isbn         = {978-3-86010-913-7},
  keyword      = {VOF,Interfacial shear,Emulsification},
  language     = {eng},
  pages        = {1--8},
  publisher    = {ARRAY(0xadcb008)},
  series       = {[Host publication title missing]},
  title        = {CFD modelling of drop formation in a liquid-liquid system},
  year         = {2007},
}