Micromixers based on chaotic advection - Micromixers Fundamentals Design and Fabrication - page 198

FIGURE 6.3
Measured three-dimensional concentration distribution at Re ¼ 160.
(Reprinted with permission from [3] .)
FIGURE 6.4
Mixing regions and boundary layers at the entrance of a T-mixer.
6.1.2 Passive mixers with obstacles in the mixing channel
Flows in passive mixers become unstable at a high Reynolds number. Similar to the turbulators used in
macroscale, obstacles placed in the mixing channels or repeated change can speed up this instability.
Figure 6.6 shows the two common implementations of obstacles in a mixing channel.