Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Flow Phenomena in Micro-channel Filling Process (II) - Numerical Analysis -

마이크로 채널 충전 과정의 유동 현상 (II) - 수치 해석 -

  • 김동성 (포항공과대학교 기계공학과) ;
  • 이광철 (포항공과대학교 기계공학과) ;
  • 권태헌 (포항공과대학교 기계공학과) ;
  • 이승섭 (포항공과대학교 기계공학과)
  • Published : 2003.05.01
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Abstract

Several interesting results were obtained from the flow visualization experiment in the accompanying paper, Part I. in the present study, Part II, a numerical study has been carried out to explain the detailed flow phenomena in micro-channel filling process. Hele-Shaw flow approximation was applied to the micro-channel geometry based on the small characteristic length. And surface tension effect has been introduced on the flow front as the boundary condition with the help of a dynamic contact angle concept between the melt front and the wall. A dimensional analysis for numerical results was carried out and a strong relationship between dimensionless pressure and Capillary number is obtained. The numerical analysis results are compared with the flow visualization experimental observations. And the numerical system developed in the present study seems to be able to predict the interesting micro-channel filling flow characteristics observed from experiments.

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References

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