Experimental investigation of single drop breakup in a confined turbulent wall-jet : Effect of Weber number
(2025) In Chemical Engineering Science 302. p.12-12- Abstract
This study uses an experimental scale-up model together with a high-speed camera setup to quantitatively study the effect of Weber number on the breakup probability, deformation time, breakup time, breakup position, and breakup rate in this geometry in a turbulent jet. Results show an increase in breakup probability and a decrease in deformation and breakup times with increasing Weber number. Breakup also occurs earlier with higher Weber numbers. Breakup time is predicted by the time it takes the drop to reach the intense turbulent stresses in the jet shear layers. Whereas breakup typically occur via a bulb-neck mechanism, drops are more chaotically deformed when breaking, if doing so at a higher Weber number. Breakup rates increase... (More)
This study uses an experimental scale-up model together with a high-speed camera setup to quantitatively study the effect of Weber number on the breakup probability, deformation time, breakup time, breakup position, and breakup rate in this geometry in a turbulent jet. Results show an increase in breakup probability and a decrease in deformation and breakup times with increasing Weber number. Breakup also occurs earlier with higher Weber numbers. Breakup time is predicted by the time it takes the drop to reach the intense turbulent stresses in the jet shear layers. Whereas breakup typically occur via a bulb-neck mechanism, drops are more chaotically deformed when breaking, if doing so at a higher Weber number. Breakup rates increase with Weber number. However, the position of the maximum local breakup rate is somewhat Weber number dependent. Results shed light on the breakup in these devices and can be used for validating breakup models.
(Less)
- author
- Håkansson, Andreas LU and Olad, Peyman LU
- organization
- publishing date
- 2025-02-05
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Drop breakup, Drop deformation, Emulsification, High-pressure homogenizer, High-speed visualization, Turbulence
- in
- Chemical Engineering Science
- volume
- 302
- article number
- 120920
- pages
- 12 - 12
- publisher
- Elsevier
- external identifiers
-
- scopus:85208968165
- ISSN
- 0009-2509
- DOI
- 10.1016/j.ces.2024.120920
- language
- English
- LU publication?
- yes
- additional info
- Publisher Copyright: © 2024 The Author(s)
- id
- 6d8f31d9-4291-4c6f-99a3-fc390e6369ff
- date added to LUP
- 2024-11-26 14:14:15
- date last changed
- 2024-12-04 09:26:40
@article{6d8f31d9-4291-4c6f-99a3-fc390e6369ff,
abstract = {{<p>This study uses an experimental scale-up model together with a high-speed camera setup to quantitatively study the effect of Weber number on the breakup probability, deformation time, breakup time, breakup position, and breakup rate in this geometry in a turbulent jet. Results show an increase in breakup probability and a decrease in deformation and breakup times with increasing Weber number. Breakup also occurs earlier with higher Weber numbers. Breakup time is predicted by the time it takes the drop to reach the intense turbulent stresses in the jet shear layers. Whereas breakup typically occur via a bulb-neck mechanism, drops are more chaotically deformed when breaking, if doing so at a higher Weber number. Breakup rates increase with Weber number. However, the position of the maximum local breakup rate is somewhat Weber number dependent. Results shed light on the breakup in these devices and can be used for validating breakup models.</p>}},
author = {{Håkansson, Andreas and Olad, Peyman}},
issn = {{0009-2509}},
keywords = {{Drop breakup; Drop deformation; Emulsification; High-pressure homogenizer; High-speed visualization; Turbulence}},
language = {{eng}},
month = {{02}},
pages = {{12--12}},
publisher = {{Elsevier}},
series = {{Chemical Engineering Science}},
title = {{Experimental investigation of single drop breakup in a confined turbulent wall-jet : Effect of Weber number}},
url = {{http://dx.doi.org/10.1016/j.ces.2024.120920}},
doi = {{10.1016/j.ces.2024.120920}},
volume = {{302}},
year = {{2025}},
}