Gas–liquid two-phase flow in meandering microchannels

Fries, Donata M.; Waelchli, Severin; Rohr, Philipp Rudolf von

doi:10.1016/j.cej.2007.07.052

Cited by 66 publications

(37 citation statements)

References 10 publications

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“…In the reference frame of the bubble, this turns into recirculation flow. 20,30 Many researches have been devoted to investigating the flow field near bubble interface, 13,20,32,38 but very few related to the leakage flow. According to the particle moving behavior, a sketch of the leakage flow was given in Figure 6, which qualitatively illustrates how neighbor liquid slugs exchange material through leakage flow.…”

Section: Resultsmentioning

confidence: 99%

On the leakage flow around gas bubbles in slug flow in a microchannel

et al. 2015

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The leakage flow is that liquid does not push gas bubbles and leaks through the channel corners. This leakage flow was confirmed by tracking particles moving in the liquid film with a double light path method and was quantified by tracking the gas-liquid interface movement. The results show that leakage flow varies during bubble formation process. The average net leakage flow Q net-leak in a bubble formation cycle at T-junction can be as large as 62.4% of the feeding liquid flow rate, depending on the liquid properties. Q net-leak for regular flow at main channel is much smaller, ranging from about 0 to 30% of the feeding liquid flow rate. The difference between the two leakage flows would lead to an increase in liquid slug length after generation. Finally, the effects of parameters such as phase flow rates, surface tension, and viscosity were investigated.

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Section: Resultsmentioning

confidence: 99%

On the leakage flow around gas bubbles in slug flow in a microchannel

et al. 2015

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“…Laser-induced fluorescence (LIF) has been used by Waelchli and von Rohr (2006) to determine the flow structure in rectangular cross-section silicon microchannels; these authors also employed micron-resolution particle imaging velocimetry (micro-PIV) to examine the velocity distribution in the recirculation zone in the liquid slug of intermittent flow. Other researchers have reported micro-PIV measurements for internal recirculation inside the liquid slug of segmented flow in meandering microchannels (Gunther et al, 2005;Fries et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Film and slug behaviour in intermittent slug–annular microchannel flows

Fouilland

Fletcher

Haynes

2010

Chemical Engineering Science

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“…The fluid behavior in the curved channel was studied both numerically and experimentally by Fries et al (2008b). They observed that after passing the curve, the flow symmetry was quickly recovered, regardless of the flow velocity, and so the asymmetric flow pattern arose only in the curved section.…”

Section: Fluid Motion In Liquid Slugmentioning

confidence: 99%

Fluid Behavior and Mass Transport Characteristics of Gas–Liquid and Liquid–Liquid Flows in Microchannels

Sotowa

2014

J. Chem. Eng. Japan

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It has been widely recognized that microchannels can be used to enhance mass transfer rate between two immiscible uids. This feature has attracted interests of many researchers in the eld of chemical engineering. To exploit such feature of microchannels, the ow characteristics and mass transfer behavior must be fully understood. In addition, to construct an industrial scale process consisting of microchannels, an e cient numbering-up technique is required. In this review, an overview of the recent literature on the uid ow and mass transfer behavior in multiphase ow in microchannels will be given. An attention is also paid to the numbering-up technique and extension to multiphase system involving three uids.

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Gas–liquid two-phase flow in meandering microchannels

Cited by 66 publications

References 10 publications

On the leakage flow around gas bubbles in slug flow in a microchannel

On the leakage flow around gas bubbles in slug flow in a microchannel

Film and slug behaviour in intermittent slug–annular microchannel flows

Fluid Behavior and Mass Transport Characteristics of Gas–Liquid and Liquid–Liquid Flows in Microchannels

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