Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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Study on Mixing Enhancement of a Y-channel Micromixer with Obstacles

Y-채널 마이크로믹서의 혼합 증대에 관한 연구

  • 최장욱 (한양대학교 대학원 기계공학과) ;
  • 최형일 (서울대학교 기계항공공학부) ;
  • 이동호 (서울대학교 기계항공공학부) ;
  • 이도형 (한양대학교 기계정보공학부)
  • Published : 2005.12.01
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Abstract

Effective mixing gives strong advantageous impact on microfluidic applications since mixing is in general very slow process motivated by molecular diffusion transport only on the micro-scale. In this work, the mixing characteristics are analyzed in a Y-channel micromixer with obstacles. For the through analysis, our laboratory in-house unstructured grid CFD code is validated through solving a concentration transport in a uniform microchannel. The solutions well correspond to both exact solutions and those from MemCFD. Mixing in a Y-channel micromixer with obstacles is numerically investigated by the in-house code to search the optimal radius and layout of obstacles. From the simulations, the mixing efficiency appears to be proportional to the magnitude of the formation of lateral velocity component. It is also shown that the asymmetric layout and radius enlargement of obstacles greatly improves mixing efficiency.

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References

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  1. Study of a Y-Channel Micromixer with Obstacles to Enhancing Mixing vol.34, pp.9, 2010, https://doi.org/10.3795/KSME-B.2010.34.9.851