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Numerical Simulation Of Three-Dimensional Passive Micromixer With Variable-Angle Grooves And Baffles

Author

Listed:
  • SIYUE XIONG

    (Faculty of Mechanical Engineering and Automation, Liaoning University of Technology, Jinzhou, Liaoning 121001, P. R. China)

  • XUEYE CHEN

    (#x2020;College of Transportation, Ludong University, Yantai, Shandong 264025, P. R. China)

Abstract

In this paper, we have studied the effect of variable-angle grooves and baffles on the mixing efficiency of the micromixer. In order to explore the influence on the micromixer with different types of grooves and baffles, we designed grooves and baffles with different geometric parameters and placed them in T-channels to interfere with fluid flow. We studied VAM30∘ (variable-angle grooves and baffles micromixer with an angle of 30∘) directions and distributions as well as their different groove depths and baffle heights affect the mixing performance. We tried to divide the grooves and baffles into five groups, and discussed the effects of staggered depth and height on mixing efficiency. The mixing efficiencies of micromixer in the Re (Reynolds number) range of 0.1–100 were calculated, and the fluid flow in the microchannel was analyzed. The simulation results show that VAM30∘ is more favorable for solution mixing. The mixing efficiency of the micromixer could reach 98.9% with the change of different geometric parameters. This is because when the structure changes, the flow state of the fluid is improved, which is conducive to lengthening the residence time of the fluid in the channel. With the increase of Re, it is also conducive to enhancing the chaotic convection and improving the mixing efficiency.

Suggested Citation

  • Siyue Xiong & Xueye Chen, 2021. "Numerical Simulation Of Three-Dimensional Passive Micromixer With Variable-Angle Grooves And Baffles," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 28(05), pages 1-8, May.
    • Handle: RePEc:wsi:srlxxx:v:28:y:2021:i:05:n:s0218625x21500372
    DOI: 10.1142/S0218625X21500372
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