Turbulence in Liquid Phase and its Influence on Aeration and Pressure Surge in Intermittent Type Two-Phase Flow

Saini, Sunny; Banerjee, Jyotirmay

doi:10.2139/ssrn.4217343

“…This gives to the interface, between the elongated bubble tail and the liquid slug nose, a staircase structure. Several works (Ruder and Hanratty, 1990;Humami et al, 2018;Saini and Banerjee, 2023) used the presence of this long tail to discriminate between plug ow and slug ow. According to Thaker and Banerjee (2016a), this structure is due to the higher acceleration of liquid slug near the bubble tail which tries to overcome the surface tension between the elongated bubble and the pipe.…”

Section: Plug Flowmentioning

confidence: 99%

“…The simultaneous flow of gas and liquid phases is encountered in several and varied applications including petroleum & gas, chemical, nuclear and cooling applications (Sassi et al, 2020a;Shen et al, 2021;Hosni et al, 2023;Arabi et al, 2024a). The complex interaction between compressible and incompressible phases, in gas-liquid two-phase flows, makes modeling hydrodynamics and heat and mass transfer, more critical for this type of flow than for single phase flows.…”

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

0

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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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“…This gives to the interface, between the elongated bubble tail and the liquid slug nose, a staircase structure. Several works (Ruder and Hanratty, 1990;Humami et al, 2018;Saini and Banerjee, 2023) used the presence of this long tail to discriminate between plug flow and slug flow. According to Thaker and Banerjee (2016a), this structure is due to the higher acceleration of liquid slug near the bubble tail which tries to overcome the surface tension between the elongated bubble and the pipe.…”

Section: Plug Flowmentioning

confidence: 99%

“…A qualitative analysis, based on a few captured images of the flows, was carried out. To the authors' knowledge, Saini and Banerjee (2023) and Zhai et al (2023) are the only works in which sub-regimes were analyzed by quantitative measurements. Saini and Banerjee (2023) measured liquid velocity using an LDV to study liquid turbulence.…”

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

0

View full text Add to dashboard Cite

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.

show abstract

“…The simultaneous ow of gas and liquid phases is encountered in several and varied applications as petroleum & gas, chemical, nuclear, cooling applications (Sassi et al, 2020a;Shen et al, 2021;Hosni et al, 2023;Arabi et al, 2024a). The complex interaction between the compressible and the incompressible phases, in gas-liquid two-phase ow, makes the modeling of the hydrodynamics as well as heat and mass transfer, more critical for this type of ow compared to single phase ow.…”

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

0

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.

show abstract

Turbulence in Liquid Phase and its Influence on Aeration and Pressure Surge in Intermittent Type Two-Phase Flow

Cited by 3 publications

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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

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

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