A NOVEL 3D MICROMIXER WITH QUARTIC KOCH CURVE FRACTAL

Siyue Xiong and Xueye Chen
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Siyue Xiong: College of Transportation, Ludong University, Yantai, Shandong 264025, P. R. China†Faculty of Mechanical Engineering and Automation, Liaoning University of Technology, Jinzhou, Liaoning 121001, P. R. China
Xueye Chen: College of Transportation, Ludong University, Yantai, Shandong 264025, P. R. China

Surface Review and Letters (SRL), 2021, vol. 28, issue 06, 1-9

Abstract: In this paper, we mainly study the mixing performance of the micromixer with quartic Koch curve fractal (MQKCF) by numerical simulation. Changing the structure of the microchannel based on the fractal principle can significantly improve the fluid flow state in the microchannel and improve the mixing efficiency of the micromixer. This paper discussed the effects of different fractal deflection angles, microchannel heights and different fractal times on the mixing efficiency under four different Reynolds numbers (Re). It is found that changing the deflection angle of the fractal can bring extremely high benefits, which makes the fluid deflect and fold in the microchannel, enhancing the chaotic convection in the microchannel, and improve the mixing efficiency of the fluid. Under the reasonable arrangement of the quartic Koch curve fractal principle, it can give the micro-mixture more than 99% mixing efficiency. Based on the excellent mixing performance of MQKCF, it also has extremely high application value in the biochemical neighborhood.

Keywords: Quartic Koch curve fractal; mixing efficiency; micromixer; chaotic convection (search for similar items in EconPapers)
Date: 2021
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DOI: 10.1142/S0218625X21500499

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