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

The Korean Society of Mechanical Engineers (대한기계학회)
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Micro-PIV Measurement of Water/Oil Two Phase Flow in a Y-Junction Microchannel

Y형 마이크로채널에서의 물/기름 2상 유동에 대한 Micro-PIV 측정

  • 윤상열 (부산대학교 대학원 기계공학과) ;
  • 고춘식 (부산대학교 대학원 기계공학) ;
  • 김경천 (부산대학교 기계공학부)
  • Published : 2004.06.01
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Abstract

Y-junction microchannels are widely used as a flew mixer. Fluids are entered from two branch channels and merged together at a combined channel. In this study, we suggest a simple method to create the fluid digitization using flow instability phenomena. Two immiscible liquids (water/oil) are infused continuously to each Y-junction inlets. Because of the differences in fluid and flow properties at the interface, oil droplet is formed automatically followed by flow instability. In order to clarify the hydrodynamic aspects involved in oil droplet formation, a quantitative flow visualization study has performed. Highly resolved velocity vector fields are obtained by a micro-PIV technique, so that detail flow structures around the droplet are illustrated. In this study, fluorescent particles were mixed with water only for visualization of oil droplet and velocity field measurement in water flow.

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References

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