Analysis, Comparison, and Discussion on the Utilization of the Existing Slug Liquid Holdup Models to Predict the Horizontal Gas-Liquid Plug-to-Slug Flow Transition

Boutaghane, Ayoub; Arabi, Abderraouf; Ibrahim-Rassoul, Nouara; Al–Sarkhi, A.; Aberqi, Ahmed

doi:10.1115/1.4056889

Cited by 8 publications

(5 citation statements)

References 45 publications

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“…Each flow pattern has its own intrinsic physical phenomena, and thus, several hydrodynamic, heat and mass transfer parameters are dependent on the flow regime (Carrarreto et al, 2020). This point explains the importance of studying, identifying and understanding flow regimes (Boutaghane et al, 2023).…”

Section: Introductionmentioning

confidence: 88%

Analysis of Horizontal Gas-liquid Intermittent Flow Sub-Regimes Transitions: Physical Mechanisms and Flow Maps

Arabi,

salhi,

Zenati

et al. 2023

Preprint

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These recent years, several experimental investigations were carried out on horizontal gas-liquid two-phase sub-regimes including plug, Less Aerated Slug (LAS) and Highly Aerated Slug (HAS) flows. Such classification is based on the shape of the elongated bubble/liquid slug interface as well as the aeration in the liquid slugs. In this paper, an extensive experimental visualization was performed using air-water mixture in a 30 mm ID horizontal pipe covering a total of 189 operating conditions. It was reported, for the first time, that each sub-regime had a specific mechanism of aeration of the liquid slug flow. For instance, the presence of gas bubbles within liquid slugs, in case of plug flow, is due to the interfacial shear induced waves mechanism. The transitions to LAS and HAS flows are accompanied by the appearance of shearing-off and scooping mechanisms of bubbles, in the liquid film, into the liquid slug, respectively. In addition, the reported flow transition lines, as well as those existing in the literature, were analyzed using different existing coordinate systems. This analysis showed that the X-T system is the most suitable for predicting the three flow sub-regimes.

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Section: Introductionmentioning

confidence: 88%

Analysis of Horizontal Gas-liquid Intermittent Flow Sub-Regimes Transitions: Physical Mechanisms and Flow Maps

Arabi,

salhi,

Zenati

et al. 2023

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…Each ow pattern has its intrinsic physical phenomena, and thus, several hydrodynamic, heat and mass transfer parameters are ow regime dependent (Carrarreto et al, 2020). This point explains the importance of studying, identifying and understanding the ow regimes (Boutaghane et al, 2023).…”

Section: Introductionmentioning

confidence: 89%

“…The conditions, when the discrepancies occurred, were analyzed using dimensionless numbers. This methodology was used recently by Boutaghane et al (2023).…”

Section: Introductionmentioning

confidence: 99%

Analysis of Horizontal Gas-liquid Intermittent Flow Sub-Regimes Transitions: Physical Mechanisms and Flow Maps

Arabi,

salhi,

Zenati

et al. 2023

Preprint

Self Cite

View full text Add to dashboard Cite

These recent years, several experimental investigations were carried out on horizontal gas-liquid two-phase flow by considering the sub-regimes which are plug, Less Aerated Slug (LAS) and Highly Aerated Slug (HAS) flows. These sub-regimes classification is based on the shape of the elongated bubble/liquid slug interface as well as the aeration within liquid slugs. In this work, an extensive experimental visualization was performed using air-water mixture in a 30 mm ID horizontal pipe. The study has covered a total of 189 operating conditions. It was reported, for the first time, that each sub-regime had a specific mechanism for aeration of the liquid slug flow. the presence of gas bubbles within liquid slugs, in the case of plug flow, is due to the interfacial shear induced waves mechanism. The transitions to LAS and HAS flows are accompanied by the appearance of the shearing-off and scooping of the bubbles present in the liquid film into liquid slug mechanisms, respectively. In addition, the reported flow transition lines, as well those existing in the literature, were analyzed using different existing coordinate systems. This analysis allowed finding that the X-T system is the most suitable one for predicting the three flow sub-regimes.

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“…Intermittent flow is an essential gas-liquid two-phase flow pattern characterized by alternating gas and liquid. Depending on the flow conditions and characteristics, it can be further divided into plug flow and slug flow [1]. Among them, slug flow exhibits a higher superficial gas velocity compared to plug flow.…”

Section: Introductionmentioning

confidence: 99%

A novel laser interferometric method for thin film thickness measurement in gas–liquid intermittent flow

Wu,

Xue

2024

Meas. Sci. Technol.

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In horizontal intermittent flow, the long bubbles move toward the center of the pipe due to inertia, forming the thin liquid film above the long bubbles. Accurate measurement of the liquid film thickness is crucial for heat and mass transfer. In this paper, laser interferometric technology is innovatively introduced to measure the film thickness of the intermittent flow, and the thin liquid film is detected with a resolution of 100 nm. Considering the curvature of the circular pipe wall, which leads to divergent reflected light, the effect of the pipe wall on the interference pattern is explored by the ray tracing technique. A two-dimensional interpolation phase retrieval algorithm based on light intensity is proposed to reconstruct the thickness of the liquid film, and the average error is less than 1.86%. Benefiting from the exceptionally high resolution, research is conducted on the thin liquid film at the top of the horizontal intermittent flow, revealing its dependence on the sub-regimes and gas-liquid velocities.

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Analysis, Comparison, and Discussion on the Utilization of the Existing Slug Liquid Holdup Models to Predict the Horizontal Gas-Liquid Plug-to-Slug Flow Transition

Cited by 8 publications

References 45 publications

Analysis of Horizontal Gas-liquid Intermittent Flow Sub-Regimes Transitions: Physical Mechanisms and Flow Maps

Analysis of Horizontal Gas-liquid Intermittent Flow Sub-Regimes Transitions: Physical Mechanisms and Flow Maps

Analysis of Horizontal Gas-liquid Intermittent Flow Sub-Regimes Transitions: Physical Mechanisms and Flow Maps

A novel laser interferometric method for thin film thickness measurement in gas–liquid intermittent flow

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