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Fluid electrification resulting from constricted flow
Author(s) -
Goodfellow H. D.,
May Z.,
Graydon W. F.
Publication year - 1967
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.5450450104
Subject(s) - streaming current , conductivity , voltage , mechanics , current (fluid) , electrification , flow (mathematics) , constriction , materials science , volumetric flow rate , electrical resistivity and conductivity , electrical engineering , chemistry , physics , nanotechnology , electricity , engineering , medicine , endocrinology , electrokinetic phenomena
The electrification of fluids of low conductivity resulting from constricted flow has been studied. Currents and voltages have been measured using insulated test sections. For discussion purposes, the electrification process has been subdivided into two regions; an electrostatic region (high static voltages and low currents) and a streaming region (low voltages and high streaming currents produced by flow constriction). Symmetrical negative and positive streaming current curves were obtained from the insulated metal tubes located upstream and downstream from the constriction. The magnitude of the streaming current was dependent on the constriction flow area, the polar solute, the conductivity of the solution, and the flow rate. Low voltages were measured in the streaming region because of the high conductivity of the fluid. Currents have been related to the measured voltage and the conductivity of the solution.