- 닫힌 모세관에서 유체 이송에 관한 연구
- ㆍ 저자명
- 임호섭,임성진,이진기,Lim. Hosub,Lim. Seong Jin,Lee. Jinkee
- ㆍ 간행물명
- 한국가시화정보학회지= Journal of the Korean society of visualization
- ㆍ 권/호정보
- 2014년|12권 2호|pp.23-29 (7 pages)
- ㆍ 발행정보
- 한국가시화정보학회
- ㆍ 파일정보
- 정기간행물| PDF텍스트
- ㆍ 주제분야
- 기타
Although many studies have been done on an open-end capillary, the invasion into a closed end capillary is still novel in its investigation. In this research we have explored the fluid invasion in closed-end capillaries where the shape of the meniscus and the height of invasion were accompanied by gas compression inside the capillary. Theoretically, the one dimensional momentum balance equation shows the fluid oscillation. In the experiments, we have found the different phenomena, either the fluid oscillation with low frequency or no oscillation. This discrepancy is mostly caused by two factors. First, a continuous decrease of the advancing contact angle due to decreasing invasion velocity as increasing pressure inside the closed-end capillary reduces the invasion velocities. Second, the high shear stress within the entrance length region was generated by the plug like velocity profile.