Abstract
Miniature reactors are important devices used for process intensification. They provide a larger surface-to-volume ratio and enhance mass transfer and heat transfer significantly. This paper presents a review of transport processes of gas-liquid and liquid-liquid two-phase flow in miniature geometries, in which the hydraulic diameter of the channel lies between 0.2 mm to 3.0 mm. Correlations for predicting the pressure drop in case of both adiabatic and non-adiabatic gas-liquid flows are summarized. Gas-liquid distributions are observed to be different from liquid-liquid flow distributions. Cross-sectional geometry does not have any effect on the flow regimes in this range. In case of liquid-liquid flow, the wall material plays an important role on flow distribution.
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