The level-set method applied to droplet dynamics in the presence of an electric field

Bjørklund, Erik

doi:10.1016/j.compfluid.2008.04.008

Cited by 39 publications

(15 citation statements)

References 38 publications

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“…The various types of level set method discussed above is applicable without any special treatment, for interface dynamics during collision of two drop of same liquid in another fluid; studied by Tanguy & Berlemont (2005) and Bjørklund (2009). However, if the drop are of different liquids, then it forms a three-fluid system and three different level set functions needs to be defined for each fluid.…”

Section: Extension From Two To Multi Fluid/phase Flowmentioning

confidence: 99%

Level set method for computational multi-fluid dynamics: A review on developments, applications and analysis

Sharma

2015

Sadhana

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Functions and conservation as well as subsidiary equations in Level Set Method (LSM) are presented. After the mathematical formulation, improvements in the numerical methodology for LSM are reviewed here for advection schemes, reinitialization methods, hybrid methods, adaptive-grid LSM, dual-resolution LSM, sharp-interface LSM, conservative LSM, parallel computing and extension from two to multi fluid/phase as well as to various types of two-phase flow. In the second part of this article, LSM method based Computational Multi-Fluid Dynamics (CMFD) applications and analysis are reviewed for four different types of multi-phase flow: separated and parallel internal flow, drop/bubble dynamics during jet break-up, drop impact dynamics on a solid or liquid surface and boiling. In the last twenty years, LSM has established itself as a method which is easy to program and is accurate as well as computationally-efficient.

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Section: Extension From Two To Multi Fluid/phase Flowmentioning

confidence: 99%

Level set method for computational multi-fluid dynamics: A review on developments, applications and analysis

Sharma

2015

Sadhana

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“…Mashayek et al [15] used the spine-flux method (SFM) for the collision dynamic of two drops. Bjørklund [16] has used the level-set method in combination with the ghostfluid method. Atten [17] has offered an analysis of the coalescence process induced by the dipolar interaction between the droplets.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of the Collision and Coalescence of Water Droplets in an Electric Field

Mohammadi

Shahhosseini

Bayat³

2013

Chem Eng & Technol

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The coalescence of binary water droplets in oil exposed to an external electric field is simulated using a model including both electrostatic and hydrodynamic sections. Available mathematical models for electric dipole-dipole force are presented in the first part of the model. Volume of Fluid approach is applied in the second part of the model. The simulation results were in good agreement with the published experimental observations. The results indicated that an improvement in electrocoalescence speed could be achieved. It was also revealed that the skew angle of the electric field, the oil viscosity, and the initial drops distance influence the electrocoalescence. Moreover, a correlation was developed to predict electrocoalescence kinetic as a function of the participant parameters.

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“…T few attempts reported in the literature at predicting the occurrence of incomplete coalescence in the presence of an electric field. Teigen et al [23] modelled the process using a combination of level-set and ghost fluid methods, as described in detail in [24]. Suppression of partial coalescence was predicted for an intermediate value of the electric Bond number, reproducing qualitatively the trend of previous investigators [25].…”

Section: Introductionmentioning

confidence: 49%

Analysis of partial electrocoalescence by Level-Set and finite element methods

Vivacqua

Ghadiri

Abdullah

et al. 2016

Chemical Engineering Research and Design

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The coalescence of a water drop in a dieletric oil phase at a water layer interface in the presence of an electric field is simulated by solving the Navier-Stokes and charge conservation equations with the finite element method. The proprietary software Comsol Multiphysics is used for this purpose.The interface between the oil and water phases is tracked by implementing a Level Set approach. The sensitivity of the model with respect to some input parameters are reported. In particular, the calculations are sensitive to the size of the computational grid elements, interface thickness and reinitialisation parameter. The ratio between the volume of secondary droplets and the initial drop volume is calculated as a function of the initial drop size and compared with experiments available in the literature. A good quantitative agreement can be obtained if the parameters are suitably tuned.The model also predicts a strong role played by the water phase conductivity in the formation of progeny droplets.

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The level-set method applied to droplet dynamics in the presence of an electric field

Cited by 39 publications

References 38 publications

Level set method for computational multi-fluid dynamics: A review on developments, applications and analysis

Level set method for computational multi-fluid dynamics: A review on developments, applications and analysis

Numerical Study of the Collision and Coalescence of Water Droplets in an Electric Field

Analysis of partial electrocoalescence by Level-Set and finite element methods

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