Paper presented at the 9th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Malta, 16-18 July, 2012.
The deformation and breakup of a conducting water drop
immersed in hexadecane in the presence of an electric field is
investigated using a numerical tool for a range of field strengths
and ion concentrations. At low electric field strengths, the drop
deformation is a linear function of the electric capillary
number. For high electric field strengths, the dependence is no
longer linear, and significant drop deformation occurs. The
drop deformation increases with increasing ion concentration,
due to a separation of ions within the drop, leading to a
redistribution of charge at either end of the drop.