Gas–Liquid Two-Phase Flow Evolution in a Long Microchannel

Ide, Hideo; Kimura, Ryuji; Kawaji, Masahiro

doi:10.1080/01457632.2013.703469

Cited by 5 publications

(3 citation statements)

References 12 publications

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“…Some of them studied the flows in the circular micro-tubes. 1–7 In these studies, the hydrodynamic behaviors of two phases in microchannel under different cases were discussed. For example, two-phase flow patterns, void fraction, and pressure drop in the circular microchannel with hydraulic diameters 1.09mm and 1.49mm were investigated by Triplett et al.…”

Section: Introductionmentioning

confidence: 99%

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Numerical investigations of gas–liquid two-phase flows in microchannels

Lou

Yang

2017

Proceedings of the Institution of Mechanical Engineers, Part C:

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Immiscible gas–liquid two-phase flows with an initial stochastically distribution, which are driven by a constant body force in a period microchannel of [Formula: see text] in width, are studied using the lattice Boltzmann method under various conditions. Continuous dynamic behaviors of bubbles and droplets including breaking up, coalescence, deformation, and mass exchange between them are observed. The flows reach to their steady state when the rate of breaking up and coalescence are in balance, and no mass exchange occurs. The simulation results show that the steady-state flow regimes depend strongly on the viscous force, surface tension, inertial force, channel width, and wettability of the solid surface. Specially, it is found that slug flow is more probable to occur for the small channel width at the same volume fraction. And the shape of bubble in the slug flow is determined by the wettability of the solid wall. Furthermore, the shape and number of bubbles at steady state are related to surface tension, viscous force, and inertial force. It is also found that the initial bubble distributions have slight effects on the flow regimes at steady state.

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Section: Introductionmentioning

confidence: 99%

“…Later, Ide et al. 5 also studied the two-phase flow pattern in the circular microchannel. In their work, the effect of microchannel length on gas–liquid two-phase flow phenomena was investigated.…”

Section: Introductionmentioning

confidence: 99%

Numerical investigations of gas–liquid two-phase flows in microchannels

Lou

Yang

2017

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…Detection of the presence, size and speed of microdroplets in microfluidic devices were realized by commercially available capacitive sensors [11]. A pair of optical void sensors was developed to investigate the evolution of adiabatic gas-liquid two-phase flow in a long microchannel [12].…”

Section: Introductionmentioning

confidence: 99%

Identification of microfluidic two-phase flow patterns in lab-on-chip devices

Yang

Dong

Halvorsen

2014

Bio-Medical Materials and Engineering

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This work describes a capacitive sensor for identification of microfluidic two-phase flow in lab-on-chip devices. With interdigital electrodes and thin insulation layer utilized, this sensor is capable of being integrated with the microsystems easily. Transducing principle and design considerations are presented with respect to the microfluidic gas/liquid flow patterns. Numerical simulation results verify the operational principle. And the factors affecting the performance of the sensor are discussed. Besides, a feasible process flow for the fabrication is also proposed.

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