4. Conclusions
In large tubes, as well as in tubes of a few millimeters in diameter,
two-phase flow patterns are, in general, dominated by gravity
with minor surface tension effects. In micro-channels with
diameters on the order of a few microns to a few hundred microns,
two-phase flow is influenced mainly by surface tension, visco’s and
inertia forces. The stratified flow patterns commonly encountered
in single macro-channels were not observed in single microchannels.
The micro-channels are sensitive not only to inlet geometry but
also to the method of gas–liquid injection.
Two-phase flow in parallel micro-channels, feeding from a
common manifold, shows that different flow patterns occur