Barrier slanted grooves

Mixer 80 [M 80] Barrier-embedded Micro Mixer with Slanted Grooves... 

Mixer type Barrier-embedded micro mixer with slanted grooves Groove tilt angle 45°... 

For comparison, a simply slanted grooved micro channel (without barriers) and a T-shaped channel (without grooves and barriers) were fabricated using the same technologies, but with fewer steps for the photolithography [58],... 

Figure 1.166 Normalized average intensity changes along the down-channel direction of three micro-mixer devices with barrier-embedded, slanted grooved and T-channel structures at (a) Re = 0.228, (b) 0.457, (c) 0.685 and (d) 2.28 [58] (by courtesy of IOP Publishing Ltd ).

M 80] [P 70] From prior experience with the chaotic screw extruder, it was estimated that the presence of the barrier structures in the barrier-embedded mixer accounts for about a 10% reduction in flow rate as compared with the slanted grooved mixer [58], Thus, a large mixing improvement is given at the cost of only a small reduction in flow rate. 

Figure 1.167 (a) Characteristic mixing length of all three micro devices and (b) detailed view of the mixing length of the barrier embedded and slanted grooved micro mixers only, as a function of the flow regime, (c)... 

M 80] [P 70] Cross-sectional images of the flow patterns, gained by confocal microscopy, demonstrate the interfacial stretching and hence are indicative of mixing in the barrier-embedded mixer [58], At the non-barrier entrance structure clearly the helical flow induced by the slanted grooves is evident. In the barrier... 

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