Evaluation of the mixing performance in a planar passive micromixer with circular and square mixing chambers

Abstract

In this paper, passive planar micromixers based on circular and square mixing chambers spaced at equidistant along the length of micromixer are proposed to operate in the laminar flow regime for high mixing index. Numerical simulations are conducted to evaluate the performance of proposed micromixers by solving the Navier–Stokes equation and convection–diffusion equation. A COMSOL Multiphysics 5.0 is used for computational fluid dynamics. Numerical simulation of mixing of fluids in a micromixer with circular and square chambers in a laminar flow regime has been carried out. Four performance parameters namely, mixing index, pressure drop, pumping power, and performance index are used to evaluate different design configurations of micromixers. Analysis of mixing index based on the standard deviation of the mass fraction is carried with different constriction channel width such as 200, 250, and 300 µm for a range of Reynolds number from 0.1 to 75. The both micromixers show over 95% mixing at the exit for the range 15–75 of Reynolds number at constriction width of 200 µm. Especially, about 99% mixing is achieved at Reynolds number less than one i.e. at 0.1. The effect of Reynolds number on the pressure drop is also investigated. Thus, the proposed micromixers can be used in microfluidic systems which require fast mixing at Re less than 1 and greater than 15.

This is a preview of subscription content, access via your institution.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9
Fig. 10
Fig. 11

References

  1. Alam A, Kim KY (2013) Mixing performance of a planar micromixer with circular chambers and crossing constriction channels. Sens Actuators B 176:639–652

    Article  Google Scholar 

  2. Ansari MA, Kim KY, Anwar K, Kim SM (2010) A novel passive micromixer based on unbalanced splits and collisions of fluid streams. J Micromech Microeng 20:055007

    Article  Google Scholar 

  3. Chen H, Meiners JC (2004) Topologic mixing on a microfluidic chip. Appl Phys Lett 84:2193–2195

    Article  Google Scholar 

  4. Chen YT, Fang WF, Liu YC, Yang JT (2011) Analysis of chaos and FRET reaction in split-and-recombine microreactors. Microfluids Nanofluids 11:339–352

    Article  Google Scholar 

  5. Chung YC, Hsu YL, Jen CP, Lu MC, Cheng Y (2004) Design of passive micromixers utilizing microfluidic self- circulation in the mixing chamber. Lab Chip 4:70–77

    Article  Google Scholar 

  6. Das SS, Tilekar SD, Wangikar SS, Patowari PK (2017) Numerical and experimental study of passive fluids mixing in micro-channels of different configurations. Microsyst Technol 23:5977–5988

    Article  Google Scholar 

  7. Gobby D, Angeli P, Gavriilidis A (2001) Mixing characteristics of T-type microfluidic mixers. J Micromech Microeng 11:126–132

    Article  Google Scholar 

  8. Hessel V, Lowe H, Schönfeld F (2005) Micromixers—a review on passive and active mixing principles. Chem Eng Sci 60:2479–2501

    Article  Google Scholar 

  9. Hong CC, Choi JW, Ahn CH (2004) A novel in-plane passive microfluidic mixer with modified tesla structures. Lab Chip 4:109–113

    Article  Google Scholar 

  10. Hossain S, Ansari MA, Kim KY (2009) Evaluation of the mixing performance of three passive micromixers. Chem Eng J 150:492–501

    Article  Google Scholar 

  11. Hossain S, Lee I, Kim SM, Kim KY (2017) A micromixer with two-layer serpentine crossing channels having excellent mixing performance at low Reynolds numbers. Chem Eng J 327:268–277

    Article  Google Scholar 

  12. Huang SW, Wu CY, Lai BH, Chien YC (2017) Fluid mixing in a swirl-inducing microchannel with square and T-shaped cross-sections. Microsyst Technol 23:1971–1981

    Article  Google Scholar 

  13. Kim DS, Lee SH, Kwon TH, Ahn CH (2005) A serpentine laminating micromixer combining splitting/recombination and advection. Lab Chip 5:739–747

    Article  Google Scholar 

  14. Kuo JN, Li YS (2017) Centrifuge-based micromixer with three-dimensional square-wave microchannel for blood plasma mixing. Microsyst Technol 23:2343–2354

    Article  Google Scholar 

  15. Lee SW, Lee SS (2008) Rotation effect in split and recombination micromixing. Sens Actuators B Chem 129:364–371

    Article  Google Scholar 

  16. Lin CH, Tsai CH, Fu LM (2005) A rapid three-dimensional vortex micromixer utilizing self-rotation effects under low Reynolds number conditions. J Micromech Microeng 15:935–943

    Article  Google Scholar 

  17. Nguyen NT, Wu Z (2005) Micromixers—a review. J Micromech Microeng 15:R1–R16

    Article  Google Scholar 

  18. Park SJ, Kim JK, Park J, Chung S, Chung C, Chang JK (2004) Rapid three-dimensional passive rotation micromixer using the breakup process. J Micromech Microeng 14:6–14

    Article  Google Scholar 

  19. Schonfeld F, Hessel V, Hofmann C (2004) An optimised split and recombine micromixer with uniform ‘chaotic’ mixing. Lab Chip 4:65–69

    Article  Google Scholar 

  20. Solehati N, Bae J, Sasmito AP (2014) Numerical investigation of mixing performance in microchannel T-junction with wavy structure. Comput Fluids 96:10–19

    Article  Google Scholar 

  21. Stone HA, Stroock AD, Ajdari A (2004) Engineering flows in small devices: microfluidics toward a lab-on-a-chip. Annu Rev Fluid Mech 36:381–411

    Article  MATH  Google Scholar 

  22. The HL, Ta BQ, Thanh HL, Dong T, Nguyen T, Karlsen TF (2015a) Geometric effects on mixing performance in a novel passive micromixer with trapezoidal-zigzag channels. J Micromech Microeng 25:094004

    Article  Google Scholar 

  23. The HL, Thanh HL, Dong T, Ta BQ, Minh NT, Karlsen F (2015b) An effective passive micromixer with shifted trapezoidal blades using wide Reynolds number range. Chem Eng Res Des 9(3):1–11

    Article  Google Scholar 

  24. Xia HM, Wan SYM, Shu C, Chew YT (2005) Chaotic micromixer using two-layer crossing channels to exhibit fast mixing at low Reynolds numbers. Lab Chip 5:748–755

    Article  Google Scholar 

  25. Xia GD, Li YF, Wang J, Zhai YL (2016) Numerical and experimental analyses of planar micromixer with gaps and baffles based on field synergy principle. Int Commun Heat Mass Transfer 71:188–196

    Article  Google Scholar 

Download references

Author information

Affiliations

Authors

Corresponding author

Correspondence to Ranjitsinha R. Gidde.

Rights and permissions

Reprints and Permissions

About this article

Verify currency and authenticity via CrossMark

Cite this article

Gidde, R.R., Pawar, P.M., Ronge, B.P. et al. Evaluation of the mixing performance in a planar passive micromixer with circular and square mixing chambers. Microsyst Technol 24, 2599–2610 (2018). https://doi.org/10.1007/s00542-017-3686-0

Download citation