Measurment of gas-liquid two-phase slug flow with a Venturi meter based on blind source separation

Wang, Weiwei; Xiao, Liang; Zhang, Mingzhu

doi:10.1016/j.cjche.2015.05.008

Cited by 13 publications

(6 citation statements)

References 15 publications

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“…Using a blind separation technique Wang et al. 15 elaborated a new method for measuring the flow rate of a gas–liquid slug flow. The method is based on the fluctuations of the differential pressure signals obtained from a Venturi meter.…”

Section: Introductionmentioning

confidence: 99%

Single- and two-phase pressure drop through vertical Venturis

Messilem

Aberqi

Zeghloul

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part C:

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An experimental investigation of the pressure drops measurements in a Venturi placed in a vertical pipe is achieved. Venturis with diameter ratios equal to 0.4, 0.55, and 0.75 were employed. Differential pressure transducers were used to measure the pressure drop between the Venturi inlet and the throat sections. The void fraction was measured upstream the Venturi using a conductance probe technique. Air and water superficial velocities ranges were chosen to cover single-phase flow and bubbly, slug, and churn flow regimes. The single-phase pressure drop increases with the liquid superficial velocity. The Venturi pressure drop coefficient increases with decreasing the Venturi area ratio. The discharge coefficient increases slightly with this ratio and approaches a value of unity at high Reynolds number. The two-phase flow pressure drop and the multiplier coefficient increase with the gas superficial velocity and with decreasing the area ratio. Dimensionless pressure drop decreases with increasing the liquid to gas superficial velocity ratio and approaches an asymptotic value at high ratio (greater than 10). This value matches the single-phase flow dimensionless pressure drop value at high Reynolds number. The Venturi with area ratio equal to 0.55 was shown to correlate well the two-phase multiplier and the liquid holdup.

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Section: Introductionmentioning

confidence: 99%

Single- and two-phase pressure drop through vertical Venturis

Messilem

Aberqi

Zeghloul

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part C:

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show abstract

“…The differential pressure signal fluctuations may contain supplementary information. Wang et al 21 proposed a new model for gas-liquid two-phase mass flow rate measurement using the characteristics of the fluctuations of two differential pressure signals obtained from two simultaneous Venturi meters.…”

Section: Introductionmentioning

confidence: 99%

Theoretical study and experimental measurement of the gas liquid two-phase flow through a vertical Venturi meter

Zeghloul

Messilem

Ghendour

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part C:

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An accurate two-phase flow rate measurement is essential in many applications and industries such as; oil/gas, chemical, pipeline transportation and nuclear industry. This paper presents the findings obtained from two-phase flow rate measurements using Venturi meters coupled with conductance probe sensors. The measurement system and presented methodology can be used to directly and continuously measure the mass flow rate of gas-liquid flows without any need for using a separator. Most of the available data in literature on mass flow rate using Venturis in gas-liquid two phase flows are limited/valid to a certain flow regime. However, the experimental data presented in this paper covered a wide range of flows (i.e. bubbly, slug and churn flows). Three Venturis with different diameter ratios, β = 0.40, β = 0.55 and β = 0.75 have been employed using an air-water vertical test section. The effect of the Venturi’s geometry on the flow behaviour was also evaluated. The average void fraction and void fraction time series have been measured along the test section by nine different conductance probe sensors covering the convergent, throat and divergent sections. In addition, the two-phase pressure drop across the Venturi was measured. Moreover, a new correlation for the gas-liquid slip ratio was proposed in this paper, which is necessary for calculating the two-phase mass flow rate. The proposed slip ratio correlation showed more accuracy than the ones available in literature. It was found that the correlation proposed by Chisholm to predict the two-phase mass flow rate in Venturis with a diameter ratio, β = 0.55, shows the best accuracy among others such as; Murdock, Lin, James and Zhang correlations.

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“…Venugopal et al [26] studied the sensitivity of the dynamic differential pressure sensor, which provided a basis for the application of vortex flowmeter. Wang et al [27] proposed a novel flow measurement method for gas-liquid two-phase slug flow by using the blind source separation technique. The flow measurement model is established based on the fluctuation characteristics of differential pressure (DP) signals measured from a Venturi meter.…”

Section: Introductionmentioning

confidence: 99%

Measurement of interphase forces based on dual-modality ERT/DP sensor in horizontal two-phase flow gas-water

et al. 2019

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In order to better understand the mechanisms of two-phase flow and the prevailing flow regimes in horizontal pipelines, the evaluation of interphase forces is paramount. This study develops a method to quantitatively estimate the interphase force in two-phase gas-water flow in horizontal pipeline. The electrical resistance tomography technology is used to measure the void fraction, while the differential pressure perpendicular to the horizontal pipe is measured in different flow patterns via a Differential Pressure sensor. The inner pipe diameter is 50 mm, the water flow range from 3.26 m 3 /h to 7.36 m 3 /h, the gas flow rate range from 1 to 60 l/min, which covered a range of flow patterns, the absolute pressure range from 0.07 MPa to 0.12 MPa. The relationship between the differential pressure drop and interphase force is established, and the effects of these forces on the flow are analyzed. Experimental results indicate that the dual-modality measurement system was successfully provided a quantitative evaluation of interphase forces in two-phase horizontal gas-water flow.

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Measurment of gas-liquid two-phase slug flow with a Venturi meter based on blind source separation

Cited by 13 publications

References 15 publications

Single- and two-phase pressure drop through vertical Venturis

Single- and two-phase pressure drop through vertical Venturis

Theoretical study and experimental measurement of the gas liquid two-phase flow through a vertical Venturi meter

Measurement of interphase forces based on dual-modality ERT/DP sensor in horizontal two-phase flow gas-water

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