3D micromixers based on Koch fractal principle
- 133 Downloads
In this paper, we mainly study the effect of the Koch fractal microchannel on the mixing efficiency. Using the Koch fractal principle can effectively change the geometric shape of the microchannel, and increase the convective contact area of the microfluid, enhance chaotic convection. Changing the geometric shape of the microchannel is an effective way to improve the mixing efficiency of the micromixer. So, it is of great significance to study the influence of fractal principle on the mixing performance of microchannel. This paper introduces the design process of the fractal microchannel. The effects of different microchannel heights and different Reynolds (Res) on the mixing efficiency are studied, we also compared the mixing efficiency of the Primary fractal and secondary fractal with different Res. When the microchannel height is 0.5 mm, the mixing efficiency exceeds 90%. In the main section of the Koch fractal channel, the vortex region produced by the fractal microchannel is an important factor to improve the mixing efficiency of the micromixer. As its excellent mixing performance, the micromixers based on the fractal principle will have great potential in chemical engineering and bioengineering.
This work was supported by National Natural Science Foundation of China (51405214), The Key Project of Department of Education of Liaoning Province (JZL201715401).
- Beskok A (2008) An electroosmotically stirred continuous micro mixer. In: ASME 2008 6th international conference on nanochannels, microchannels, and minichannels. American Society of Mechanical Engineers, pp 1655–1659Google Scholar
- Cao Q, Han X, Li L (2015) An active microfluidic mixer utilizing a hybrid gradient magnetic field. Int J Appl Electromagnet Mech 47(3):583–592Google Scholar
- Capretto L, Cheng W, Hill M, Zhang X (2011) Micromixing within microfluidic devices. In: Microfluidics. Springer, Berlin, pp 27–68Google Scholar
- Chen X, Shen J (2017) Design and simulation of a chaotic micromixer with diamond-like micropillar based on artificial neural network. Int J Chem React Eng 15(2):1617–1628Google Scholar
- Humayun Q, Hashim U, Ruzaidi CM, Noriman NZ (2017) A strategy for design and fabrication of low cost microchannel for future reproductivity of bio/chemical lab-on-chip application. In: AIP conference Proceedings, vol 1808(1). AIP Publishing, p 020022Google Scholar