Method based on parallel‐wire conductivity probe for measuring water hold‐up in near‐horizontal oil–water two‐phase flow pipes. Issue 6 (1st August 2020)

• Record Type: Journal Article
• Authors: Zhou, Yiyu; Jin, Ningde; Zhang, Hongxin; Zhai, Lusheng
• Is Part Of: IET science, measurement & technology. Volume 14:Issue 6(2020)
• Page Start: 676
• Page End: 683
• Publication Date: 2020-08-01
• Subjects: stratified flow -- valves -- oils -- water -- Laplace equations -- flow measurement -- finite element analysis -- pipe flow -- two‐phase flow; parallel‐wire conductivity probe -- water layer height -- curved oil–water interface -- water‐hold‐up measurement -- near‐horizontal oil–water interface -- oil–water stratified distribution -- measurement error analysis -- Young–Laplace equation model -- near‐horizontal oil–water two‐phase flow pipes -- finite‐element method -- quick‐closing valve technology -- size 1050.0 mm -- size 20.0 mm; Measurement -- Periodicals; Electrical engineering -- Periodicals; Electronics -- Periodicals; Nanotechnology -- Periodicals; Electromagnetism -- Periodicals; Medical instruments and apparatus -- Periodicals; 621.3
• DOI: 10.1049/iet-smt.2019.0308
• Languages: English
• ISSNs: 1751-8822

Abstract

Abstract : On the basis of a quick‐closing valve technology, parallel‐wire conductivity probes were designed to measure water hold‐up of oil–water two‐phase flow in near‐horizontal pipe. First, the electric‐field distribution characteristics of the parallel‐wire conductivity probe and its response to the change of the water layer height were calculated by using finite‐element method. Then, for the oil–water stratified distribution in the near‐horizontal pipe with a 5° inclined angle, 20 mm inner diameter, and 1050 mm length, a measurement model for water hold‐up was established. After that, a static experiment was carried out to investigate the accuracy of water‐hold‐up measurement. The results show that errors occur when the set water hold‐up is with high values. The measurement errors were analysed based on curved oil–water interface predicted by Young–Laplace equation model, which are significantly related to the curvature of oil–water interface. It provides an effective experimental method for the measurement of water hold‐up in a near‐horizontal oil–water two‐phase flow pipes. On the basis of this, the dynamic experiment of oil–water two‐phase flow was carried out, and the slippage of oil–water two‐phase flow was preliminarily revealed.