Electrical Capacitance Tomography (ECT) and gamma radiation meter for comparison with and validation and tuning of CFD modeling of multiphase flow

Pradeep, Chaminda; Ren, Yan; Vestøl, Sondre; Melaaen, Morten C.; Mylvaganam, Saba

doi:10.1109/ist.2012.6295569

Cited by 3 publications

(4 citation statements)

References 5 publications

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“…In a typical ECT application, the first set of results is the raw capacitance values, as well known comprising 1 2 N(N − 1) values for an ECT system with N electrodes. These values are usually processed by solving an inverse problem based on permittivities of the media flowing in the pipe leading to tomograms in the context of process tomography.…”

Section: Electrical Capacitance Tomographymentioning

confidence: 99%

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Electrical capacitance tomography (ECT) and gamma radiation meter for comparison with and validation and tuning of computational fluid dynamics (CFD) modeling of multiphase flow

Pradeep¹,

Ren²,

Vestøl³

et al. 2014

Meas. Sci. Technol.

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The electrical capacitance tomographic (ECT) approach is increasingly seen as attractive for measurement and control applications in the process industries. Recently, there is increased interest in using the tomographic details from ECT for comparing with and validating and tuning CFD models of multiphase flow. Collaboration with researchers working in the field of computational fluid dynamics (CFD) modeling of multiphase flows gives valuable information for both groups of researchers in the field of ECT and CFD. By studying the ECT tomograms of multiphase flows under carefully monitored inflow conditions of the different media and by obtaining the capacitance values, C(i, j, t) with i = 1…N, j = 1, 2,…N and i ≠ j obtained from ECT modules with N electrodes, it is shown how the interface heights in a pipe with stratified flow of oil and air can be fruitfully compared to the values of those obtained from ECT and gamma radiation meter (GRM) for improving CFD modeling. Monitored inflow conditions in this study are flow rates of air, water and oil into a pipe which can be positioned at varying inclinations to the horizontal, thus emulating the pipelines laid in subsea installations. It is found that ECT-based tomograms show most of the features seen in the GRM-based visualizations with nearly one-to-one correspondence to interface heights obtained from these two methods, albeit some anomalies at the pipe wall. However, there are some interesting features the ECT manages to capture: features which the GRM or the CFD modeling apparently do not show, possibly due to parameters not defined in the inputs to the CFD model or much slower response of the GRM. Results presented in this paper indicate that a combination of ECT and GRM and preferably with other modalities with enhanced data fusion and analysis combined with CFD modeling can help to improve the modeling, measurement and control of multiphase flow in the oil and gas industries and in the process industries in general.

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Section: Electrical Capacitance Tomographymentioning

confidence: 99%

“…The interface heights are measured and compared and then used to validate CFD models, which can be tuned to reflect the features detected by these two sensor modalities. This paper is a modified and improved version of the paper presented at IST 2012 [1].…”

mentioning

confidence: 99%

Electrical capacitance tomography (ECT) and gamma radiation meter for comparison with and validation and tuning of computational fluid dynamics (CFD) modeling of multiphase flow

Pradeep¹,

Ren²,

Vestøl³

et al. 2014

Meas. Sci. Technol.

Self Cite

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“…For multiphase flow study purposes, a Computational Fluid Dynamics (CFD) simulation is involved so that the flow behaviour and design of a process with the specific parameters can be revealed and optimized after verified by some modalities [15][16][17]. As a promising tool, ECVT models can be used for verifying the CFD codes of a controlled experiment simulation.…”

Section: Introductionmentioning

confidence: 99%

“…As a promising tool, ECVT models can be used for verifying the CFD codes of a controlled experiment simulation. Some studies about comparison results of CFD simulation and electrical capacitance tomography (ECT)/ECVT have been reported, among of those are the study of pneumatic transport of granular materials in a inclined conveying pipe, the multiphase flow studies in oil and gas industries, and the drying processes in fluidized bed [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Electrical Capacitance Volume Tomography Validation of Column Flotation Process with Gas Injection Variation

Harjanto¹,

Haryono

Faisal

et al. 2018

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Electrical capacitance volume tomography (ECVT) is proposed as a novel realtime monitoring system for column flotation process. This study aims to validate the results between static and dynamic simulations using ECVT and ECVT-Computational Fluids Dynamics (ECVT-CFD) and real-time column flotation monitoring experiment using ECVT system. Bubble fractions from both the simulations and the experiments with the variation of gas velocity (0.02, 0.03 and 0.04 m/s) were compared and measured. The results of the study showed that ECVT experiments successfully simulated the images of bubbles inside the real-time column flotation. Both simulations and experiments showed that the bubble fraction increased with the increasing of gas velocity. Furthermore, the comparison between the simulated bubble fraction and the experimental results gave a validation accuracy range of 86%-98%. It was also indicated that at higher gas velocity (0.04 m/s) the accuracy of the simulations is better than that of lower gas velocity (0.02 and 0.03 m/s).

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Imaging of oil-water flow patterns by Electrical Capacitance Tomography

Perera

Pradeep

Mylvaganam

et al. 2017

Flow Measurement and Instrumentation

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Electrical Capacitance Tomography (ECT) and gamma radiation meter for comparison with and validation and tuning of CFD modeling of multiphase flow

Cited by 3 publications

References 5 publications

Electrical capacitance tomography (ECT) and gamma radiation meter for comparison with and validation and tuning of computational fluid dynamics (CFD) modeling of multiphase flow

Electrical capacitance tomography (ECT) and gamma radiation meter for comparison with and validation and tuning of computational fluid dynamics (CFD) modeling of multiphase flow

Electrical Capacitance Volume Tomography Validation of Column Flotation Process with Gas Injection Variation

Imaging of oil-water flow patterns by Electrical Capacitance Tomography

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