A.C. Characteristics of the Electroviscous Effect

The pressure-drop fluctuations induced by the application of an A.C. electric field perpendicular to the flow direction of various dielectric liquids were observed by means of a pressure gauge. In the low-frequency range, the pressure-drop fluctuates periodically, while a phase difference is observe...

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Bibliographic Details
Published in:Japanese Journal of Applied Physics 1980-01, Vol.19 (8), p.1463
Main Authors: Honda, Tsutomu, Kurosawa, Kaoru, Sasada, Tadashi
Format: Article
Language:English
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Summary:The pressure-drop fluctuations induced by the application of an A.C. electric field perpendicular to the flow direction of various dielectric liquids were observed by means of a pressure gauge. In the low-frequency range, the pressure-drop fluctuates periodically, while a phase difference is observed which depends on the A.C. field frequency. The pressure-drop also fluctuates periodically in the high-frequency range but no phase difference is observed. These different properties are attributed to a difference in the conduction process, i.e., injections in the low-frequency range and electrolytic dissociations in the high-frequency range. In both ranges, pressure-drop fluctuations result from the disturbance of the mean flow caused by electroconvection.
ISSN:0021-4922
1347-4065
DOI:10.1143/JJAP.19.1463