期刊
JOURNAL OF ELECTROSTATICS
卷 51, 期 -, 页码 448-454出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0304-3886(01)00082-1
关键词
flow electrification; conductive and dielectric liquids; insulating pipe; theoretical model
Flow electrification phenomena in the case of conductive and dielectric liquids flowing through an insulating pipe are compared. A theoretical model, which takes into account the development time of the diffuse layer in the case of a laminar flow, is compared with streaming current measurements. Experiments are conducted with water (electrical conductivity 0.2 < sigma < 1.4 mS/m) and heptane (53 < sigma < 1010 pS/m) flowing through a 32 mum-radius glass pipe. Evolution of the space charge density at the wall p, in function of the liquid conductivity cr is analysed. Results show that the intensity of how electrification depends mainly on the space charge density at the wall and the liquid electrical conductivity. (C) 2001 Elsevier Science B.V. All rights reserved.
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