2009
DOI: 10.1115/1.3089543
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The Effects of Inlet Geometry and Gas-Liquid Mixing on Two-Phase Flow in Microchannels

Abstract: The effects of gas-liquid inlet geometry and mixing method on adiabatic gas-liquid two-phase flow in a microchannel of 100 μm diameter have been investigated using a T-junction inlet with the same internal diameter as the microchannel. Two-phase flow patterns, void fraction, and friction pressure drop data obtained with the T-junction inlet were found to be significantly different from those obtained previously with a reducer inlet. For the T-junction inlet, the two-phase flow patterns in the microchannel were… Show more

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Cited by 49 publications
(7 citation statements)
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“…4 shows the relationship between a d and b d for bubbly and short slug (l d ( L 2 ) flows of the present data and those obtainable measurements in the literature. 12,13,28,29 Those data of b d from the literature in Fig. 4 were measured by flowmeters with the flow-rate range of 20-30 000 mL min À1 , which were much higher than that of the present investiga- Since most experimental data fall around the predicted curve within a reasonable small deviation band in Fig.…”
Section: Prediction Of Gas Flow Rate Ratio B D From Void Fraction a Dmentioning
confidence: 52%
“…4 shows the relationship between a d and b d for bubbly and short slug (l d ( L 2 ) flows of the present data and those obtainable measurements in the literature. 12,13,28,29 Those data of b d from the literature in Fig. 4 were measured by flowmeters with the flow-rate range of 20-30 000 mL min À1 , which were much higher than that of the present investiga- Since most experimental data fall around the predicted curve within a reasonable small deviation band in Fig.…”
Section: Prediction Of Gas Flow Rate Ratio B D From Void Fraction a Dmentioning
confidence: 52%
“…For example, as stated in Wu et al [11], the tubing/threading pattern at the cross-junction either evolves into an annular flow or a slug flow at downstream locations in the main microchannel; the dripping regime at the cross-junction either develops into a slug flow or a droplet flow at downstream axial locations. Slug hydrodynamics (e.g., slug size and velocity) and their dependence on Ca and q have been analyzed [14,[17][18][19].…”
Section: Introductionmentioning
confidence: 99%
“…Kawahara et al (2002) and Chung et al (2004) investigated the adiabatic two-phase flow in tubes of 50 ~ 250 µm diameter and reported that significant differences in the flow regime maps and void fraction from those for minichannels with diameters above ~ 1 mm have been observed. Furthermore, Kawaji et al (2005) showed that the inlet geometry played an important part to the characteristics of adiabatic gas-liquid two-phase flow in microchannels.…”
Section: Introductionmentioning
confidence: 99%