Gas–liquid two-phase flow in microchannels Part I: two-phase flow patterns

Triplett, K.A.; Ghiaasiaan, S. Mostafa; Abdel‐Khalik, S. I.; Sadowski, D. L.

doi:10.1016/s0301-9322(98)00054-8

Cited by 801 publications

(501 citation statements)

References 19 publications

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“…Among the flow patterns (Triplett et al, 1999;Zhao et al, 2013), slug flow is easily obtainable for a large range of operating conditions, and characterized by sequences of a gas bubble and a liquid slug. The figuration of slug flow contains regular sized gas bubbles that are longer than the channel diameter or width.…”

Section: Introductionmentioning

confidence: 99%

Characteristics of slug flow with inertial effects in a rectangular microchannel

Yao

Zhao

et al. 2013

Chemical Engineering Science

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Section: Introductionmentioning

confidence: 99%

Characteristics of slug flow with inertial effects in a rectangular microchannel

Yao

Zhao

et al. 2013

Chemical Engineering Science

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“…[5] for a horizontal pipe). At present, these flow pattern maps are advanced for various twophase flow situations (e.g., [6][7][8] for a horizontal pipe; [9] for a nonNewtonian liquid). One can refer to some published textbooks, e.g., [10,11].…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Gas-Liquid Two-Phase Flow in a Horizontally Placed Hydrophobic Rectangular Channel (Part 1, Influence of Abrupt Expansion)

Ueda¹,

Nakajima

Ishii³

et al. 2012

High Temperature Materials and Processes

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This paper aims to computationally investigate flow patterns of gasliquid twophase with an abrupt expansion. To do so, the present computation is nicely verified against the previous experimental results for a good wettability surface. These rectangular channels have a thickness narrower than the Laplace constant of the present situation. Under a poor wettability condition, this narrow thickness affects the flow pattern; e.g., the air phase forms channeling behind the expansion in a low airflow rate whereas the air phase becomes fragments of bubbles due to the expansion under a good wettability condition.

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“…The transient formulation first order implicit with non-iterative time advancement is set in current simulation. For slug flow region, gas and liquid flow rates ranges were adopted from the flow regime map of 4 . The flow rates of both gas and liquid used in the present simulation ranged from 0.025-0.5 m s -1 .…”

Section: Governing Equationsmentioning

confidence: 99%

“…ic systems is required in order to broaden the existing knowledge and expertise on these systems. In the literature, numerous experimental investigations are reported on the hydrodynamics and flow characteristics of gas liquid two-phase flow in microfluidic systems over the years [4][5][6][7][8][9][10][11][12][13] . Several flow patterns such as bubbly, slug/Taylor, churn, annular and dispersed have been observed in the gas liquid two-phase flow.…”

mentioning

confidence: 99%

“…These flow patterns develop in different flow conditions, fluid's nature, channel size, geometry and wettability of the microfluidic system. The flow pattern maps 4,7,8,10 indicate that slug flow usually dominates over other flow patterns for wide-ranging operating conditions in microfluidic systems. The slug flow is characterized by alternate sequences of cylindrical shaped liquid slugs and gas bubbles.…”

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confidence: 99%

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Numerical Study on Bubble Dynamics and Two-Phase Frictional Pressure Drop of Slug Flow Regime in Adiabatic T-junction Square Microchannel

Kishor

Chandra

Khan

et al. 2017

Chem.Biochem.Eng.Q.

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In this study, bubble dynamics and frictional pressure drop associated with gas liquid two-phase slug flow regime in adiabatic T-junction square microchannel has been investigated using CFD. A comprehensive study on the mechanism of bubble formation via squeezing and shearing regime is performed. The randomness and recirculation profiles observed in the squeezing regime are significantly higher as compared to the shearing regime during formation of the slug. Further, effects of increasing gas velocity on bubble length are obtained at fixed liquid velocities and simulated data displayed good agreement with available correlations in literature. The frictional pressure drop for slug flow regime from simulations are also obtained and evaluated against existing separated flow models. A regression correlation has also been developed by modifying C-parameter using separated flow model, which improves the prediction of two-phase frictional pressure drop data within slug flow region, with mean absolute error of 10 %. The influences of fluid properties such as liquid viscosity and surface tension on the two-phase frictional pressure drop are also investigated and compared with developed correlation. The higher liquid viscosity and lower surface tension value resulted in bubble formation via shearing regime.

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Gas–liquid two-phase flow in microchannels Part I: two-phase flow patterns

Cited by 801 publications

References 19 publications

Characteristics of slug flow with inertial effects in a rectangular microchannel

Characteristics of slug flow with inertial effects in a rectangular microchannel

Numerical Simulation of Gas-Liquid Two-Phase Flow in a Horizontally Placed Hydrophobic Rectangular Channel (Part 1, Influence of Abrupt Expansion)

Numerical Study on Bubble Dynamics and Two-Phase Frictional Pressure Drop of Slug Flow Regime in Adiabatic T-junction Square Microchannel

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