Effect of surface modification on parallel flow in microchannel with guideline structure

Kositanont, C.; Tagawa, Tetsuya; Yamada, Hiroshi; Putivisutisak, Sompong; Assabumrungrat, Suttichai

doi:10.1016/j.cej.2012.10.047

Cited by 8 publications

(3 citation statements)

References 28 publications

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“…1-B and C show a guideline structure with intermittent partition wall structure (IPWS). CFD analysis revealed the detail role of guideline structure on the stabilization of parallel flow [6,7]. Figure 2 shows the actual set up of the reactor chip.…”

Section: Resultsmentioning

confidence: 99%

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Reaction Engineering of Microchannel Catalytic Reactors for Green Process

Tagawa

2014

AMM

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It is essential to introduce green sustainable chemical process into developing countries. Use of microchannel reactors is one of the future solutions. Especially, application of multiphase catalytic system should be studied in the reaction engineering view point. Examples of application of catalysts to microchannel reactors were introduced such as: Use of phase transfer catalysts in multi phase parallel flow reactors, Use of phase transfer catalysts with the aid of ultrasonic irradiation in multiphase slug flow capillary reactors and Preparation of gas phase tube wall type catalytic reactors which were evaluated with microscopic FT-IR and UV spectrometer.

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Section: Resultsmentioning

confidence: 99%

“…Complete separation of organic phase and aqueous phase was difficult because of hydrophilic nature of the glass microchannel wall. Thus surface modification with silan [7,10] was tested. Stable organic phase flow was obtained by making the wall of organic channel into hydrophobic nature.…”

Section: Resultsmentioning

confidence: 99%

Reaction Engineering of Microchannel Catalytic Reactors for Green Process

Tagawa

2014

AMM

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“…Similar to Han and Chen, [58], the authors defined a 3 step approach for droplet formation which the authors named Filling, necking and lag stage. Lan et al [55], carried out 3D numerical simulations for two different geometries Co-tube microchannel and Flow focusing shape microchannel. A modified Level-Set method was used to resolve the interface movement due to the mass loss problem in original Level-Set method.…”

Section: Effect Of Channel Geometry Fluid Properties and Flowratesmentioning

confidence: 99%

Hydrodynamics of Liquid-Liquid Flows in Micro Channels and Its Influence on Transport Properties: A Review

Ganguli

Pandit

2021

Energies

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Hydrodynamics plays a major role in transport of heat and mass transfer in microchannels. This includes flow patterns and flow regimes in which the micro-channels are operated. The flow patterns have a major impact the transport properties. Another important aspect is the pressure drop in micro-channels. In the present review, the experimental and Computational Fluid Dynamics (CFD) studies covering all the above aspects have been covered. The effect of geometrical parameters like shape of channel, channel size, material of construction of channels; operating parameters like flow velocity, flow ratio and fluid properties have been presented and analyzed. Experimental and analytical work of different pressure drop models has also been presented. All the literature related to influence of flow patterns on transport properties like volumetric mass transfer coefficients (VMTC) and heat transfer coefficients (HTC) have been presented and analyzed. It is found that most works in Liquid-Liquid Extraction (LLE) systems have been carried out in slug flow and T-junctions. Models for coupled systems of flow and mass transfer have been presented and works carried out for different coupled systems have been listed. CFD simulations match experimental results within 20% deviations in quantitative and qualitative predictions of flow phenomena for most research articles referred in this review. There is a disparity in prediction of a generalized regime map and a generalized regime map for prediction of flow patterns for various systems would need the help of Artificial Intelligence.

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