Mass transfer during Taylor flow in microchannels with and without chemical reaction

Shao, Nan; Gavriilidis, Asterios; Angeli, Panagiota

doi:10.1016/j.cej.2010.02.049

Cited by 113 publications

(69 citation statements)

References 26 publications

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“…The effect of chemical reaction on the gas absorption in microchannel was studied by Shao et al (2010). The absorption rates of CO 2 into water and NaOH solution were calculated using a computational fluid dynamics model, which was validated with a set of experimental data.…”

Section: Mass Transfer With Chemical Reactionsmentioning

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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Section: Mass Transfer With Chemical Reactionsmentioning

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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“…4 with m = 1 gives u max /u mean = u max /U s = 1.92 for D/W = 0.4 and 1.77 for D/W = 0.25 (Shah and London 1978). For the D = 27 lm and W = 92 lm rectangle, u max /U s is 1.86 which was slightly larger than the exact and numerical values of 1.82 (Hudson 2010) and 1.83 (Morini 2004).…”

Section: Estimate Of U S /U Bmentioning

confidence: 70%

Liquid velocity distribution in slug flow in a microchannel

Luo

Wang

2011

Microfluid Nanofluid

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The liquid velocity distributions in two-phase slug flows in a nearly rectangular microchannel etched on a microfluidic chip were investigated using a threedimensional tracking method for submicron fluorescent particles seeded in the working liquid (water). The Taylor bubbles generated from dissolved air in the water through heating the micro-fluidic chip to 35-55°C had low velocities, so they had the very small Capillary and Reynolds numbers. The change in the Taylor bubble shape with the flow conditions such as the bubble velocity and temperature was negligible in the present study. The shapes of the fully developed Taylor bubbles were determined by analyzing the interference fringes in in-line holographic images of the microchannel section containing the bubble to estimate the bubble cross-sectional area. The three-dimensional liquid velocity distribution for the two-phase slug flow was obtained using a least-squares fit of the measured tracer particle velocities to an analytic velocity distribution for Poiseuille flow in a rectangular channel to determine the mean liquid velocity and the liquid flow rate in the slug. The liquid velocity was normalized using the measured instantaneous bubble velocity to remove the influence of the slug and the bubble velocity fluctuations on the liquid velocity distribution. The results show that the mean liquid velocity through the microchannel corners is 2.3 times the bubble velocity, which is in agreement with previous observations of the maximum liquid velocity in the corners of 3.5-3.8 times the bubble velocity.

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“…A common approach used to evaluate the interfacial mass transfer is to estimate the mass flux by the interfacial concentration gradient [15,16,18,19].…”

Section: Mass Transfer Modelmentioning

confidence: 99%

Investigation of the Taylor bubble under the effect of dissolution in microchannel

Jia

Zhang

2016

Chemical Engineering Journal

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Mass transfer during Taylor flow in microchannels with and without chemical reaction

Cited by 113 publications

References 26 publications

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

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

Liquid velocity distribution in slug flow in a microchannel

Investigation of the Taylor bubble under the effect of dissolution in microchannel

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