Title :
Instability of electrically stressed water droplets in oil
Author :
Berg, Gunnar ; Lundgaard, Lars E. ; Becidan, Michael ; Sigrnond, R.S.
Author_Institution :
Energy Res., SINTEF, Trondheim, Norway
Abstract :
The breakup of water droplets in an electric field has been studied in naphtenic oil as a function of water conductivity and surface tension of the droplets, and frequency and waveform of the applied voltage. The critical breakup field compares well to theoretical values for low voltage frequencies, but large deviations are found for frequencies above 100 Hz. Four different instability modes are observed at droplet breakup.
Keywords :
dielectric liquids; dielectric polarisation; drops; electrical conductivity; emulsions; organic compounds; surface tension; water; 100 Hz; H2O; applied voltage frequency; applied voltage waveform; critical breakup field; electric field effects; electrically stressed water droplets; instability; instability modes; naphtenic oil; surface tension; water conductivity; water droplet breakup; Conductivity; Conductors; Dielectrics; Electrostatics; Frequency; Permittivity; Petroleum; Polarization; Stress; Surface tension;
Conference_Titel :
Dielectric Liquids, 2002. ICDL 2002. Proceedings of 2002 IEEE 14th International Conference on
Print_ISBN :
0-7803-7350-2
DOI :
10.1109/ICDL.2002.1022734
