Modeling and design of a new conductance probe for Gas Void Fraction measurement of two-phase flow through annulus

Ghendour, Nabil; Aberqi, Ahmed; Meribout, Mahmoud; Zeghloul, Ammar

doi:10.1016/j.flowmeasinst.2021.102078

Cited by 7 publications

(2 citation statements)

References 49 publications

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“…Based on the work of Li et al [30], this study presents a new dynamic conductivity sensor designed for real-time measurement of liquid flow. Instead of using a circumferential array conductivity probe, this novel reciprocating sensor employs conductance technique to measure the discrepancy in electrical conductivity between the phases of the mixture [31]. As shown in Fig.…”

Section: Measurement Principlementioning

confidence: 99%

A Novel Method for Determining the Void Fraction in Gas-Liquid Multi-Phase Systems Using a Dynamic Conductivity Probe

Luo,

Qi,

Luo

et al. 2024

FDMP

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Conventional conductivity methods for measuring the void fraction in gas-liquid multiphase systems are typically affected by accuracy problems due to the presence of fluid flow and salinity. This study presents a novel approach for determining the void fraction based on a reciprocating dynamic conductivity probe used to measure the liquid film thickness under forced annular-flow conditions. The measurement system comprises a cyclone, a conductivity probe, a probe reciprocating device, and a data acquisition and processing system. This method ensures that the flow pattern is adjusted to a forced annular flow, thereby minimizing the influence of complex and variable gas-liquid flow patterns on the measurement results; Moreover, it determines the liquid film thickness solely according to circuit connectivity rather than specific conductivity values, thereby mitigating the impact of salinity. The reliability of the measurement system is demonstrated through laboratory experiments. The experimental results indicate that, in a range of gas phase superficial velocities 5-20 m/s and liquid phase superficial velocities 0.079-0.48 m/s, the maximum measurement deviation for the void fraction is 4.23%.

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Section: Measurement Principlementioning

confidence: 99%

A Novel Method for Determining the Void Fraction in Gas-Liquid Multi-Phase Systems Using a Dynamic Conductivity Probe

Luo,

Qi,

Luo

et al. 2024

FDMP

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“…Ghendour et al 1 reviewed in details the mostly used technique for void fraction measurements in annulus. In another work, Ghendour et al 2 performed an extensive numerical simulations using COMSOL Multiphysics software in order to model and design of a novel multi-electrodes conductance probe to achieve the optimum accuracy of void fraction measurement in an annulus. The highest sensitivity of the conductance probes was found to occur in a 2 × 2 ring electrodes configuration, that is, a pair of electrodes for both the tubing and the casing.…”

Section: Introductionmentioning

confidence: 99%

Two-phase flow in a vertical concentric annulus: Pressure drop and flow configuration

Zeghloul

Al–Sarkhi

Ghendour

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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This paper presents experimental investigation of flow configurations and pressure drop of single-phase water flow and two-phase air-water flow in a vertical annulus. The annular test section had a concentric geometry with a casing and tubing diameter of 50 and 33.7 mm, respectively. The superficial velocity conditions of the liquid and gas were ranged 0.08–1.56 and 0–3.56 m/s, respectively. The combination of these superficial velocities produces the bubbly, slug and churn flow regimes. The identification of the flow patterns shows that the Mishima and Ishii model is the most relevant to highlight the flow transition. The measured friction factors were compared to prediction models from the literature. It was deduced that the model proposed by Gunn and Darling underestimates the liquid friction factor in the annulus. The measured pressure drops and the dimensionless pressure gradient evolution exhibits different slopes that characterize each flow pattern. The standard deviation and structure frequency describe specific ranges for each flow pattern. These two parameters can also be used for the prediction of flow patterns.

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Improved phase fraction measurement via non-intrusive optical sensing for vertical upward gas -liquid flow

Sarkodie

Fergusson-Rees

Asiedu

2023

Gas Science and Engineering

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Modeling and design of a new conductance probe for Gas Void Fraction measurement of two-phase flow through annulus

Cited by 7 publications

References 49 publications

A Novel Method for Determining the Void Fraction in Gas-Liquid Multi-Phase Systems Using a Dynamic Conductivity Probe

A Novel Method for Determining the Void Fraction in Gas-Liquid Multi-Phase Systems Using a Dynamic Conductivity Probe

Two-phase flow in a vertical concentric annulus: Pressure drop and flow configuration

Improved phase fraction measurement via non-intrusive optical sensing for vertical upward gas -liquid flow

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