Comparison of turbulent drop breakup in an emulsification device and homogeneous isotropic turbulence : Insights from numerical experiments
(2023) In Colloids and Surfaces A: Physicochemical and Engineering Aspects 657.- Abstract
Turbulent emulsification is of considerable industrial interest. Nevertheless, numerical experiments (direct numerical simulations, DNS, with highly resolved interface tracking) have been mainly used to study drop breakup in idealized flows. This study, therefore, compares drop breakup in two different settings (homogenous and isotropic flow, and a simplified high-pressure homogenizer) with the intention of better understanding how insight gained from the idealized systems can be applied to industrially relevant devices. The flow differs between the two cases, with highly anisotropic and inhomogeneous turbulence in the latter. Results show similarities between the two cases regarding morphology of breakup, suggesting that the underlying... (More)
Turbulent emulsification is of considerable industrial interest. Nevertheless, numerical experiments (direct numerical simulations, DNS, with highly resolved interface tracking) have been mainly used to study drop breakup in idealized flows. This study, therefore, compares drop breakup in two different settings (homogenous and isotropic flow, and a simplified high-pressure homogenizer) with the intention of better understanding how insight gained from the idealized systems can be applied to industrially relevant devices. The flow differs between the two cases, with highly anisotropic and inhomogeneous turbulence in the latter. Results show similarities between the two cases regarding morphology of breakup, suggesting that the underlying mechanism, as a function of Weber number, is similar. However, differences are also observed, e.g., in terms of breakup time and deformed morphology, which are associated with the locality of the turbulence in the homogenizer. Implications for an improved understanding of turbulent breakup in industrially relevant devices are discussed.
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- author
- Olad, Peyman LU ; Innings, Fredrik LU ; Crialesi-Esposito, Marco ; Brandt, Luca and Håkansson, Andreas LU
- organization
- publishing date
- 2023-01-20
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Direct numerical simulation, Emulsification, High-pressure homogenizer, Turbulence
- in
- Colloids and Surfaces A: Physicochemical and Engineering Aspects
- volume
- 657
- article number
- 130569
- pages
- 14 pages
- publisher
- Elsevier
- external identifiers
-
- scopus:85141924993
- ISSN
- 0927-7757
- DOI
- 10.1016/j.colsurfa.2022.130569
- language
- English
- LU publication?
- yes
- additional info
- Funding Information: This research was funded by The Swedish Research Council (VR), grant number 2018-03820 , and Tetra Pak Processing Systems AB . Publisher Copyright: © 2022 The Authors
- id
- 97d93eb4-a669-4ce8-a297-99273922614b
- date added to LUP
- 2022-11-28 07:24:40
- date last changed
- 2023-12-20 06:16:03
@article{97d93eb4-a669-4ce8-a297-99273922614b,
abstract = {{<p>Turbulent emulsification is of considerable industrial interest. Nevertheless, numerical experiments (direct numerical simulations, DNS, with highly resolved interface tracking) have been mainly used to study drop breakup in idealized flows. This study, therefore, compares drop breakup in two different settings (homogenous and isotropic flow, and a simplified high-pressure homogenizer) with the intention of better understanding how insight gained from the idealized systems can be applied to industrially relevant devices. The flow differs between the two cases, with highly anisotropic and inhomogeneous turbulence in the latter. Results show similarities between the two cases regarding morphology of breakup, suggesting that the underlying mechanism, as a function of Weber number, is similar. However, differences are also observed, e.g., in terms of breakup time and deformed morphology, which are associated with the locality of the turbulence in the homogenizer. Implications for an improved understanding of turbulent breakup in industrially relevant devices are discussed.</p>}},
author = {{Olad, Peyman and Innings, Fredrik and Crialesi-Esposito, Marco and Brandt, Luca and Håkansson, Andreas}},
issn = {{0927-7757}},
keywords = {{Direct numerical simulation; Emulsification; High-pressure homogenizer; Turbulence}},
language = {{eng}},
month = {{01}},
publisher = {{Elsevier}},
series = {{Colloids and Surfaces A: Physicochemical and Engineering Aspects}},
title = {{Comparison of turbulent drop breakup in an emulsification device and homogeneous isotropic turbulence : Insights from numerical experiments}},
url = {{http://dx.doi.org/10.1016/j.colsurfa.2022.130569}},
doi = {{10.1016/j.colsurfa.2022.130569}},
volume = {{657}},
year = {{2023}},
}