Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
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Dynamic Behavior of a Growing Drop at the Exit of a Fine Capillary

미세관 출구에서의 드롭성장의 동적인 거동에 관한 연구

  • Kong, Chang-Suk (College of Human Ecology, Pusan National University) ;
  • Kim, Ji-Young (Department of Textile Engineering, Pusan National University) ;
  • Kim, Han-Seong (Department of Textile Engineering, Pusan National University)
  • 공창숙 (부산대학교 생활환경대학) ;
  • 김지영 (부산대학교 공과대학 섬유공학과) ;
  • 김한성 (부산대학교 공과대학 섬유공학과)
  • Published : 2006.08.01
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Abstract

Growing drop technique has been developed for measuring the dynamic behavior of drop at the exit of a fine capillary where a drop grows. In this study, the system was designed to simulate the electrospinning process without applying a high voltage to understand the dynamic behavior of PVA solution before ejecting a fluid jet. The system associated with Image analysis technique and numerical analysis method has been developed. Important parameters of the drop formation were extracted by programming image analysis techniques such as fill boundary method and chain cord algorithm. To obtain statistically meaningful data, numerical analysis techniques were programmed. The diameter, volume, contact angle and velocity of fluid head of PVA solution at the exit of a fine capillary have been measured and calculated with various hydrostatic pressures. The integrated system of image analysis and numerical analysis methods has been successfully used to investigate the effect of the hydrostatic force on drop formation.

Keywords

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