NDLI: Interface imaging in multiphase flow based on frame by frame eigenvalues of capacitance matrices from Electrical Capacitance Tomographic systems

Content Provider	IEEE Xplore Digital Library
Author	Ru Yan Pradeep, C. Muwanga, J. Mylvaganam, S.
Copyright Year	2012
Description	Author affiliation: Faculty of Technology, Department of Electrical, Information Technology and Cybernetics, Telemark University College, Porsgrunn, Norway (Ru Yan; Pradeep, C.; Muwanga, J.; Mylvaganam, S.)
Abstract	Electrical Capacitance Tomographic (ECT) approach is a viable solution to measurement and control applications in the process industries, especially in the oil and gas industries, as systems certified for usage in explosive environments are available in the market today. In the process industries, there is often a need to identify certain parameters of interest in multiphase flow studies, depending on the relevant parameters to be control. There are a plethora of parameters such as interface levels, volumetric fractions of the different fluids, flow regimes, bubble size and velocity etc. Mathematical studies of the capacitance matrices for each frame obtained from ECT systems have shown that the eigenvalues of these have clear and vivid association with some of the flow related parameters. By studying the eigenvalues of these matrices for ECT based capacitance measurements C(i, j, t) with i=1 … N, j= 1,2, … N and i ≠ j obtained from ECT modules with N electrodes, some simple relationships are found between eigenvalues and interface levels for each frame for multiphase flows under carefully monitored inflow conditions of the different media. Monitored inflow conditions in the present study are flow rates of air, water and oil into a pipe which can be positioned at varying inclinations to the horizontal, similar to the subsea pipelines used in the oil and gas industries. Results presented in this paper, indicate that useful information on multiphase flow related parameters can be extracted from capacitance measurements thus rendering an imaging of the process with focus on certain features of interest to the process engineer.
Starting Page	466
Ending Page	469
File Size	184942
Page Count	4
File Format	PDF
ISBN	9781457717765
e-ISBN	9781457717758
DOI	10.1109/IST.2012.6295567
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-07-16
Publisher Place	United Kingdom
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Eigenvalues and eigenfunctions Capacitance Capacitance measurement Particle separators Tomography Fluid flow measurement data fusion ECT ECTm Multiphase flow Capacitance matrices (frame by frame) interface level detection
Content Type	Text
Resource Type	Article

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