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《中国化学工程学报(英文版)》 2015-01
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Liquid holdup measurement with double helix capacitance sensor in horizontal oil-water two-phase flow pipes

Lusheng Zhai;Ningde Jin;Zhongke Gao;Zhenya Wang;School of Electrical Engineering & Automation, Tianjin University;  
This paper presents the characteristics of a double helix capacitance sensor for measurement of the liquid holdup in horizontal oil–water two-phase flow. The finite element method is used to calculate the sensitivity field of the sensor in a pipe with 20 mm inner diameter and the effect of sensor geometry on the distribution of sensitivity field is presented. Then, a horizontal oil–water two-phase flow experiment is carried out to measure the response of the double helix capacitance sensor, in which a novel method is proposed to calibrate the liquid holdup based on three pairs of parallel-wire capacitance probes. The performance of the sensor is analyzed in terms of the flow structures detected by mini-conductance array probes.
【Fund】: Supported by the National Natural Science Foundation of China(50974095 41174109 61104148);; the National Science and Technology Major Projects(2011ZX05020-006)
【CateGory Index】: TP212
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