Experimental investigation on the effect of diameter ratio on two-phase slug flow separation in a T-Junction

Saieed, Ahmed; Pao, William; Hewakandamby, Buddhika N.; Azzopardi, B.J.; Wood, David A.; Ali, Hafız Muhammad

doi:10.1016/j.petrol.2018.06.033

Cited by 24 publications

(46 citation statements)

References 17 publications

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“…From the experimental data obtained, it was analyzed that gas-liquid phase separation in T-junction and liquid carry-over in the branch arm followed a particular mechanism. However, when liquid slug passed the junction because of having higher momentum compared to the gas phase, the liquid strikes the with a wall of the branch arm and diverted into branch arm and is accordance with the results reported by Saieed [26]. This pouring of liquid into branch arm was motivated by the head of liquid in the main arm.…”

Section: Upstream Superficial Velocities Of Phasessupporting

confidence: 90%

“…The value of R² obtained was 0.93, and it shows that experimental data fits fairly well in the empirical model obtained by statistical regression analysis. The present experimental data have been compared with published data of Saieed et al [5]. Saieed et al [5] obtained phase separation data for slug flow under different diameter ratios.…”

Section: Discussionmentioning

confidence: 65%

“…The present experimental data have been compared with published data of Saieed et al [5]. Saieed et al [5] obtained phase separation data for slug flow under different diameter ratios. Figure 16 shows a comparison between the present experimental data and data of Saieed et al [5] at a diameter ratio of 0.67.…”

Section: Discussionmentioning

confidence: 65%

“…Arirachakaran [30] characterized this flow as "dam break" type flow. However, Saieed [26] describes this phenomenon as slug jump and slug fall back. At low extraction ratios, slug jumps into the branch arm and fall back when the stratified portion is opposite to the junction.…”

Section: Upstream Superficial Velocities Of Phasesmentioning

confidence: 99%

“…During gas-liquid flow through T-junction, uneven phase distribution occurs. Each time volume of individual phases diverted into the branch arm is different; sometimes, the branch receives the gas-liquid rich stream, and another time it receives gas-rich stream during which liquid flows un-diverted into run arm [3][4][5]. This uneven and volatile nature of splitting in T-junction is because of the involvement of a large number of geometrical parameters that govern the splitting phenomenon.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Experimental investigation of two-phase separation in a horizontal T-junction with vertical branch arm

Memon¹,

Pao²,

Hashim³

et al. 2019

JMES

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T-junctions are commonly used in offshore platforms and process industry. When two-phase flow passes through T-junction, separation of two-phases takes place. This separation of twophase flow through T-junction produces high liquid carry-over in the branch arm, causing breakdown of downstream equipment. In this experimental study, phase separation data have been obtained for air-water mixture flow through dividing T-junction with a pipe diameter of 74 mm and the branch arm is positioned vertically upward. T-junctions with diameter ratios of 1, 0.67, 0.5, and 0.27 were tested in the slug flow regime. The superficial velocities of air (JG1) were varied 0.20 -1.16 m/s and inlet water superficial velocities (JL1) were varied 0.40-0.53 m/s. The extraction ratio between branch arm and main arm (W3/W1) was varied between 0 to 1. It was observed that the phase separation efficiency of T-junction depends upon the diameter ratio, upstream superficial velocities of both phases -air and water. Finally, the experimental data have been compared against the predicted results obtained from the numerical correlations.

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Section: Upstream Superficial Velocities Of Phasessupporting

confidence: 90%

Section: Discussionmentioning

confidence: 65%

Section: Discussionmentioning

confidence: 65%

Section: Upstream Superficial Velocities Of Phasesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Experimental investigation of two-phase separation in a horizontal T-junction with vertical branch arm

Memon¹,

Pao²,

Hashim³

et al. 2019

JMES

View full text Add to dashboard Cite

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Numerical investigation of liquid‐liquid two‐phase separation and pressure drop characteristics in T‐junctions

et al. 2021

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Based on the Eulerian and k − ε viscous models, a numerical model of liquid-liquid two-phase flow in a T-junction was established. The simulation results were in reasonable agreement with the experimental data. The effects of the mass fraction taken off through branch and mixture velocity on the separation efficiency and pressure drop characteristics were investigated using the validated model. The results illustrate that the separation efficiency first increases and then decreases with an increase in the mass fraction taken off through branch. When the mass fraction taken off through branch is close to the inlet mass quality, the separation efficiency reaches its maximum. The maximum separation efficiency decreases with the increase of the mixture velocity. In addition, the pressure drop from the inlet to the outlet is primarily due to the local resistance at the intersection and frictional resistance in the pipe, and the pressure drop from the inlet to the branch is majorly caused by the gravity in the branch. It was observed that there is a vortex region at the inlet of the outlet pipe, causing pressure losses.

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Calculation of the phase separation rate in two‐phase flow of non‐Newtonian power‐law fluid and gas bubbles flowing inside the T‐ and Y‐junctions using random vortex method (RVM)

2022

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In this paper, the phase separation rate in a two‐phase flow of non‐Newtonian power‐law fluid and gas bubbles flowing inside T‐ and Y‐junction channels with branch angles of 45° and 135° is numerically investigated. The numerical simulation is carried out using the random vortex method (RVM) for the Reynolds number of liquid phase at the inlet of the channel Rem = 250 for various power‐law indexes (n = 0.2–1.4). The result of this research represents valuable information about the effect of branch angle and also the power‐law index on the phase separation. The result shows that when increasing the branch angle, the phase separation is increased, while when increasing the power‐law index, the phase separation is decreased. The acceptable conformation between this study and the experimental results shows the capability of the evaluated method.

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Experimental investigation on the effect of diameter ratio on two-phase slug flow separation in a T-Junction

Cited by 24 publications

References 17 publications

Experimental investigation of two-phase separation in a horizontal T-junction with vertical branch arm

Experimental investigation of two-phase separation in a horizontal T-junction with vertical branch arm

Numerical investigation of liquid‐liquid two‐phase separation and pressure drop characteristics in T‐junctions

Calculation of the phase separation rate in two‐phase flow of non‐Newtonian power‐law fluid and gas bubbles flowing inside the T‐ and Y‐junctions using random vortex method (RVM)

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