Earticle

초록

영어

A two-phase flow in mini-channels is consist with various flow regimes (such as bubble slug, annular, churn flow) according to gas and liquid phase flow rates. A previous researches revealed that in a case of slug flow in hydrophobic mini-channels, gas and liquid phase are perfectly separated by interfaces and triple contact line. In this study, the single dry slug flow experiments in circular mini-channel (D = 1.018 mm) are conducted to observe interfacial break-up phenomena in high capillary number range (Ca < 0.02). The slug is consist with D.I. water or D.I. water-ethanol binary mixtures (5% and 10%, mole fraction). On the base of previous researches, we calculate the pressure drop at moving triple contact line. In an addition, a single dry slug flow is visualized by using high-speed camera. Through the experiment, three regimes of pressure drop are observed; steady, loss, separation. As a result, criteria between steady and loss regimes is closely related to capillary number, and criteria between loss and separation regimes is related to surface tension.

목차

ABSTRACT
기호설명
1. 서론
2. 실험
2.1 실험 장치
2.2 실험 수행방법
2.3 실험 결과 정리
3. 실험 결과 및 고찰
4. 결론
후기
References

키워드

저자

• 박수청 [ Su Cheong Park | POSTECH Department of Mechanical Engineering ]
• 서경덕 [ Kyoung Duck Seo | Wonkwang University, Department of Mechanical Engineering ] Corresponding author
• 유동인 [ Dong In Yu | Pukyong National University, Department of Mechanical Design Engineering ] Corresponding author

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  한국기계항공기술학회지(구 한국기계기술학회지) [Journal of the Korean Society of Mechanical and Aviation Technology ]

• 간기

  격월간

• pISSN

  1229-604X

• eISSN

  2508-3805

• 수록기간

  1999~2026

• 등재여부

  KCI 등재

• 십진분류

  KDC 550 DDC 620