Measurement of solid slurry flow via correlation of electromagnetic flow meter, electrical resistance tomography and mechanistic modelling

Jing-yu Xu, Ying-xiang Wu, Zhi-chu Zheng, Mi Wang, Abu Bakar Munir, H. I. Oluwadarey, H. Inaki Schlaberg, Richard A Williams

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

The study presented here was carried out to obtain the actual solids flow rate by the combination of electrical resistance tomography and electromagnetic flow meter. A new in-situ measurement method based on measurements of the Electromagnetic Flow Meters (EFM) and Electrical Resistance Tomography (ERT) to study the flow rates of individual phases in a vertical flow was proposed. The study was based on laboratory experiments that were carried out with a 50 mm vertical flow rig for a number of sand concentrations and different mixture velocities. A range of sand slurries with median particle size from 212 μm to 355 μm was tested. The solid concentration by volume covered was 5% and 15%, and the corresponding density of 5% was 1078 kg/m3 and of 15% was 1238 kg/m3. The flow velocity was between 1.5 m/s and 3.0 m/s. A total of 6 experimental tests were conducted. The equivalent liquid model was adopted to validate in-situ volumetric solids fraction and calculate the slip velocity. The results show that the ERT technique can be used in conjunction with an electromagnetic flow meter as a way of measurement of slurry flow rate in a vertical pipe flow. However it should be emphasized that the EFM results must be treated with reservation when the flow pattern at the EFM mounting position is a non-homogenous flow. The flow rate obtained by the EFM should be corrected considering the slip velocity and the flow pattern.
Original languageEnglish
Pages (from-to)557-563
Number of pages7
JournalJournal of Hydrodynamics, Ser. B
Volume21
Issue number4
DOIs
Publication statusPublished - Aug 2009

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