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The effect of electric field on droplet formation and motion in a viscous liquid
Author(s) -
He W.,
Baird M. H. I.,
Chang J. S.
Publication year - 1991
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450690518
Subject(s) - nozzle , electric field , mechanics , voltage , field (mathematics) , materials science , scattering , distilled water , viscous liquid , electrode , chemistry , optics , physics , thermodynamics , chromatography , quantum mechanics , mathematics , pure mathematics
The formation and initial motion of distilled water droplets injected into a viscous oil were studied in the absence of an electrical field and under the influence of a high voltage (up to 10 kV) field. The droplets were formed at a stainless steel nozzle in a rectangular cell (38 × 10 × 10 cm) equipped with grounded parallel plate electrodes along two sides of the cell. As the voltage applied to the nozzle was increased, the formed droplets were reduced in size and showed repulsion and some upwards scattering; the droplet velocity near the nozzle was greatly increased by the field, with the droplets decelerating as they moved away from the nozzle. Droplet formation and motion with and without electric field have been compared with predictive models, showing qualitative agreement and partial quantitative agreement.