Electrohydrodynamic settling of drop in uniform electric field: beyond Stokes flow regime

  title={Electrohydrodynamic settling of drop in uniform electric field: beyond Stokes flow regime},
  author={Nalinikanta Behera and Shubhadeep Mandal and Suman Chakraborty},
  journal={Journal of Fluid Mechanics},
  pages={498 - 523}
The electrohydrodynamics of a weakly conducting buoyant drop under the combined influence of gravity and a uniform electric field is studied computationally, focusing on the inertia-dominated regime. Numerical simulations are performed for both perfectly dielectric and leaky dielectric drops over a wide range of dimensionless parameters to explore the interplay of fluid inertia and electrical stress to govern the drop shape and charge convection. For perfectly dielectric drops, the fluid… 

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Electrohydrodynamic behaviour of a drop subjected to a steady uniform electric field at finite electric Reynolds number

  • James Q. Feng
  • Physics
    Proceedings of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences
  • 1999
The electrohydrodynamic flow associated with a fluid drop in an electric field is a consequence of the tangential electric stress at the fluid interface. The tangential viscous stress due to the

The effect of surface charge convection and shape deformation on the settling velocity of drops in nonuniform electric field

The electrohydrodynamic settling of a leaky dielectric drop suspended in another leaky dielectric medium of unbounded extent in the combined presence of gravity and a nonuniform (combination of

Nonlinear electrohydrodynamics of slightly deformed oblate drops

The transient deformation of a weakly conducting (‘leaky dielectric’) drop under a uniform DC electric field is computed via an axisymmetric boundary integral method, which accounts for surface

Drop deformation and emulsion rheology under the combined influence of uniform electric field and linear flow

Electrohydrodynamics of a leaky dielectric suspended drop subjected to the combined influence of a uniform electric field and linear velocity field is analysed analytically and numerically. In the

Effect of surface charge convection and shape deformation on the dielectrophoretic motion of a liquid drop.

Comparison with the existing experiments reveals better agreement with the present theory, and the combined effect of these can significantly increase or decrease the dielectrophoretic drop velocity depending on the electrohydrodynamic properties of both the liquids and the relative strength of the electric Reynolds number and electric capillary number.

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The sedimentation of a surfactant-laden deformable viscous drop acted upon by an electric field is considered theoretically. The convection of surfactants in conjunction with the combined effect of

A nonlinear small-deformation theory for transient droplet electrohydrodynamics

The deformation of a viscous liquid droplet suspended in another liquid and subject to an applied electric field is a classic multiphase flow problem best described by the Melcher–Taylor leaky

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When an electric field is applied to a drop suspended in another liquid the drop deforms. The relation between the applied field and the mode and magnitude of the deformation have been studied

Axisymmetric deformation and stability of a viscous drop in a steady electric field

We consider a neutrally buoyant and initially uncharged drop in a second liquid subjected to a uniform electric field. Both liquids are taken to be leaky dielectrics. The jump in electrical

The role of surface charge convection in the electrohydrodynamics and breakup of prolate drops

The deformation of a weakly conducting, ‘leaky dielectric’, drop in a density matched, immiscible weakly conducting medium under a uniform direct current (DC) electric field is quantified