Earticle

초록

영어

At a two phase flow, according to gas and liquid phase flow rates, various flow regimes are developed such as bubbly, slug/plug, churn, annular, droplet flow and so on. At a two phase flow in small scaled channels, among various flow regimes, the intermittent flows such as bubbly, slug/plug flow are developed in the broad regions of two phase flow pattern map. In particular, the flow regimes are influenced by surface wettability. In a case of slug flow in hydrophobic small scaled channels, gas and liquid phases are perfectively separated by interfaces and contact line. The pressure drop of the two-phase flow is largely generated at moving contact line. Therefore, to well design two-phase flow system with small scales, it is important to estimate the pressure drop at moving contact line. In this study, on the basis of previous research, the pressure drop at moving contact line is experimentally measured for a various fluids (0-40% water-ethanol mixtures). And, the previous correlation to estimate pressure drop at moving contact line is verified by experimental data. In an addition, we discuss interfacial broken phenomena of slug flow in a minichannel. (D=1.555mm).

목차

Abstract
기호설명
1. 서론
2. 실험
2.1 실험장치 및 실험수행방법
2.2 데이터 정리
3. 실험결과 및 고찰
3.1 슬러그 길이에 따른 움직이는 접촉선에서의 압력강하
3.2 물-에탄올 혼합비에 따른 움직이는 접촉선에서의 압력강하
3.3 기존 상관식과의 검증
3.4 계면 속도 증가에 따른 슬러그 계면 파괴 현상
4. 결론
후기
References

키워드

저자

• 서경덕 [ Kyoung-Duck Seo | Wonkwang University, Department of Mechanical Engineering ]
• Narayan Pandurang Sapkal [ Pukyong National Univeristy, Department of Mechanical Design Engineering ]
• 유동인 [ Dong-In Yu | Pukyong National Univeristy, 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