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

The Korean Society of Mechanical Engineers (대한기계학회)
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Parametric Study on the Characteristics of Multiphase Laminar Flow with Density Difference in Various Microchannels

다양한 형상의 마이크로 채널 내 밀도 차를 가진 다상 층류 유동의 특성에 대한 매개변수 연구

  • 백승호 (중앙대학교 대학원 기계공학부) ;
  • 김동성 (중앙대학교 기계공학부) ;
  • 최영기 (중앙대학교 기계공학부)
  • Published : 2009.10.01
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Abstract

In this paper, we have performed a parametric study on the characteristics of multiphase laminar flow with density difference in various microchannels. The interface between multiphase fluids is rotated by the gravitational forces induced by density difference. The numerical simulations were carried out via commercial CFD package to study the characteristics of multiphase laminar flow. The results of the numerical simulations in this study were verified by comparing with the previously reported experimental results in the literature. We have also proposed a new dimensionless relationship between dimensionless rotation angle of interface and dimensionless parameters are proposed for square microchannels with various aspect ratios. The dimensionless relationship could be widely applied to the reliable design of various microfluidic devices dealing with multiphase laminar flow.

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References

  1. Kenis, P.J.A., Ismagilov, R.F. and Whitesides, G.M., 2005, 'Microfabrication Inside Capillaries Using Multiphase Laminar Flow Patterning,' Science, Vol. 285, pp. 83-85 https://doi.org/10.1126/science.285.5424.83
  2. Kenis, P.J.A., Ismagilov, R.F., Takayama, S. and Whitesides, G.M., 2000, 'Fabrication Inside Microchannels Using Fluid FDow,' Acc. Chem. Res., Vol. 33, pp. 841-847 https://doi.org/10.1021/ar000062u
  3. Weigl, B.H. and Yager, P., 1999, 'Microfluidic diffusion-Based Separation and Detection,' Science, Vol. 283, pp. 346-347 https://doi.org/10.1126/science.283.5400.346
  4. Kamholz, A.E., Weigl, B.H., Finlaysom, B.A. and Yager, P., 1999, 'Quantitative Analysis of Molecular Interaction in a Microfluidic Channel : The T-Sensor,' Anal. Chem., Vol. 71, pp. 5340-5347 https://doi.org/10.1021/ac990504j
  5. Ito, T., Maruyama, K., Sobue, K., Ohya, S., Niwa, O. and Suzuki, K., 2004, 'Electrochemical Behavior of Parallel Opposed Dual Electrode in a Microchannel,' Electroanal., Vol. 16, pp. 2035-2041 https://doi.org/10.1002/elan.200303055
  6. Nichols, K.P., Eijkel, J.C.T. and Gardeniers, H.J.G.E., 2008, 'Nanochannels in SU-8 with Floor and Ceiling Metal Electrodes and Integrated Microchannels,' Lab Chip, Vol. 8, pp. 173-175 https://doi.org/10.1039/b715917j
  7. Paek S.H., Kim J.S., Hwang C.J., Choi Y.K., Kim D.S., 2008, 'Microfabrication of Dual Opposite Silver Electrodes Inside a Microchannel by Means of Multiphase Laminar Flow with Density Difference,' Proceedings of the Twelfth International Conference on Miniaturized Systems for Chemistry and Life Sciences (uTAS), Vol. 1, pp. 354-356; Paek S.H., Yang W.S., Kim J.S., Hwang C.J., Choi Y.K., Kim D.S., submitted
  8. Gao, Y. and Chen, L., 2008, 'Versatile Control of Multiphase Laminar Flow for in-Channel Microfabrication,' Lab Chip, Vol. 8, pp. 1695-1699 https://doi.org/10.1039/b807468b
  9. Goluch E.D., Shaikh K.A., Ryu K., Chen J., Engel J., Liu C., 2004, 'Microfluidic Method for in-Situ Deposition and Precision Patterning of Thin-Film Metals on Curved Surfaces,' Appl. Phys. Lett., Vol. 85, pp. 3629-3631 https://doi.org/10.1063/1.1808872
  10. Choban, E.R., Markoski, L.J., Wieckowski, A. and Kenis, P.J.A, 2004, 'Microfluidic Fuel Cell Based on Laminar Flow,' J. Power Source, Vol. 128, pp. 54-60 https://doi.org/10.1016/j.jpowsour.2003.11.052
  11. Ismagilov R.F., Stroock A.D., Kenis P.J.A., Whitesides G.M., Stone H.A., 2000, 'Experimental and Theoretical Scaling Laws for Transverse Diffusive Broadening in Two-Phase Laminar Flows in Microchannels,' Appl. Phys. Lett., Vol. 76, pp. 2376- 2378 https://doi.org/10.1063/1.126351
  12. Yoon, S.K., Mitchell, M., Choban, E.R. and Kenis, P.J.A., 2005, 'Gravity-Induced Reorientation of the Interface Between Two Liquids of Different Densities Flowing Laminarly Through a Microchannel,' Lab Chip, Vol. 5, pp. 1259-1263 https://doi.org/10.1039/b508680a
  13. Beebe, D.J., Mensing, G.A. and Walker, G.M., 2002, 'Physics and Applications of Microfluidics in Biology,' Annu. Rev. Biomed. Eng., Vol. 4, pp. 261-286 https://doi.org/10.1146/annurev.bioeng.4.112601.125916