Abstract
The mixing is difficult but fundamentally important in microfluidic systems. Three simple yet novel passive mixers were designed and fabricated with cylindrical grooves adjoining to the main straight channel. A serial of systematic simulations and experiments have been done with the increase of the groove-depth, ranging from 0 to 3/4-cylindrical groove. All results confirmed the improvement of mixing in these mixers in a short distance (<20. mm). Over a wide range of Reynolds number (from 0.1 to 100), the ratios of 'the percentage of mixing of the mixer with 1/4-cylindrical grooves to that with no grooves increase from 1.23 to 5.11. All designs are very easy to fabricate and have great potential to be integrated into a total microfluidic system.
| Original language | English |
|---|---|
| Pages (from-to) | 157-163 |
| Number of pages | 7 |
| Journal | Chemical Engineering Science |
| Volume | 81 |
| DOIs | |
| State | Published - 22 Oct 2012 |
| Externally published | Yes |
Keywords
- Cylindrical groove
- Laminar flow
- Mixing
- Numerical analysis
- PDMS
- Passive mixer
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