期刊
CHEMICAL ENGINEERING SCIENCE
卷 81, 期 -, 页码 157-163出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ces.2012.07.004
关键词
Mixing; Numerical analysis; Laminar flow; Passive mixer; PDMS; Cylindrical groove
资金
- National Natural Science Foundation of China [21003032]
- program for New Century Excellent Talents in University [NCET-09-0054]
- special grant for returned scholars from Harbin city council [2011RFLXG001]
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 (phi)' 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. (c) 2012 Elsevier Ltd. All rights reserved.
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