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A phase field model for multiphase electro-hydrodynamic flow
KTH, School of Engineering Sciences (SCI), Mechanics, Physicochemical Fluid Mechanics. KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW.
2012 (English)In: International Journal of Multiphase Flow, ISSN 0301-9322, E-ISSN 1879-3533, Vol. 45, 1-11 p.Article in journal (Refereed) Published
Abstract [en]

The principles of electro-hydrodynamics have been known for more than a century and extensive experimental studies have been carried out. Insight about such types of flows have been widely adopted for industrial applications, e.g. fluid mixing and de-mixing, but analytical solutions only exist in a limited number of cases, e.g. small deformation of a single droplet in a uniform and steady electric field. Numerical modeling of such phenomena can provide significant insights into electro-hydrodynamic multi-phase flows. In the present paper we propose a phase field model for studying two-phase electro-hydrodynamic flow generated by an electric field. The proposed model is validated and found to be in good agreement with existing analytical solutions and numerical studies in the literature. We also investigate the influence of viscosity ratio and surface tension in binary coalescence of drops in an immiscible fluid.

Place, publisher, year, edition, pages
2012. Vol. 45, 1-11 p.
Keyword [en]
Phase field method, Leaky dielectric model, Electro-hydrodynamics, Droplet coalescence, Finite element method, Diffuse interface, Numerical simulation
National Category
Fluid Mechanics and Acoustics
Identifiers
URN: urn:nbn:se:kth:diva-104118DOI: 10.1016/j.ijmultiphaseflow.2012.04.002ISI: 000307424800001Scopus ID: 2-s2.0-84861647627OAI: oai:DiVA.org:kth-104118DiVA: diva2:563242
Funder
Swedish Research CouncilSwedish e‐Science Research Center
Note

QC 20121029

Available from: 2012-10-29 Created: 2012-10-29 Last updated: 2017-12-07Bibliographically approved

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Physicochemical Fluid MechanicsLinné Flow Center, FLOW
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CiteExportLink to record
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Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf