Biomedical Engineering Reference
In-Depth Information
Figure 6.31
Schematic view of a parallel micromixer by IMM. The two fluids are mixed together
after in channels of reduced cross sections.
6.2.12.5 Mixing in Two-Phase Flows
Mixing is not a problem reserved to single phase microflows. Obtaining short time
for mixing is also important in two-phase flow and plug flow. The mixing of plug
flows has recently been a subject of interest. Qualitatively, the internal convective
motion in a liquid plug is that sketched in Figure 6.34. Usually—but not always
[14]—the plug keeps the same geometry during its motion because of the effect of
surface tension. Due to the displacement of the plug and the friction at the solid
walls, two convective cells forms in the plug.
Figure 6.32
Principle of chaoting mixing by successive stretching and folding of flow domain.
