Dynamics of double emulsion interfaces under the combined effects of electric field and shear flow

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Saghatchi, Roozbeh and Özbulut, Murat and Yıldız, Mehmet (2021) Dynamics of double emulsion interfaces under the combined effects of electric field and shear flow. Computational Mechanics, 68 (4). pp. 775-793. ISSN 0178-7675 (Print) 1432-0924 (Online)

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Abstract

In this paper, the dynamics of a 2D double emulsion under the combined effects of the electric field and shear flow are studied by using an incompressible smoothed particle hydrodynamics (ISPH) method. Six different systems are used, each corresponding to different electrical properties. The effects of capillary and electrical capillary numbers, and core to shell radius ratio on the deformation and orientation angle of core and shell droplets are discussed thoroughly. It is shown that the deformation is highly dependent on these values, as well as the electrical properties. Electric force components and hydrodynamic stresses on the core-shell and shell-medium interfaces are calculated and discussed in detail. It is demonstrated that in some systems, a breakup occurs, which can be circumvented by changing the capillary and electrical capillary numbers as well as the core to shell droplet radius ratio. Finally, different breakup forms are investigated comprehensively.
Item Type: Article
Uncontrolled Keywords: Breakup; Double emulsion; Electric field; Incompressible smoothed particle hydrodynamics method; Multiphase flow; Shear flow
Divisions: Faculty of Engineering and Natural Sciences > Academic programs > Materials Science & Eng.
Faculty of Engineering and Natural Sciences > Academic programs > Manufacturing Systems Eng.
Faculty of Engineering and Natural Sciences
Depositing User: Mehmet Yıldız
Date Deposited: 22 Sep 2021 16:43
Last Modified: 14 May 2024 15:18
URI: https://research.sabanciuniv.edu/id/eprint/42457

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