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Linear oscillations of a drop in uniform alternating electric fields
Author(s) -
Yang Wenrui,
Carleson Thomas E.
Publication year - 1991
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690371102
Subject(s) - streamlines, streaklines, and pathlines , electric field , oscillation (cell signaling) , mechanics , drop (telecommunication) , amplitude , physics , alternating current , dielectric , viscosity , classical mechanics , optics , chemistry , thermodynamics , electrical engineering , biochemistry , power (physics) , optoelectronics , quantum mechanics , engineering
Oscillations of a conducting drop immersed in a dielectric fluid in an alternating electric field were modeled to understand the enhancement of transport processes by the electric field. Numerical solutions for oscillation amplitude, velocity distribution, resonant frequency and streamlines were obtained. The effects of viscosity and density on the resonant frequency and the velocity distribution were investigated. It was found that the resonant frequency of viscous fluids was always smaller than the free oscillation frequency of the same droplet. The predicted scanning frequency response curve and the streamlines agree well with the experimental observations.