Study on Collision of Droplet on a Thin Cylindrical Body
- 주제(키워드) 도움말 액적(droplet) , 충돌(impact)
- 발행기관 서강대학교 일반대학원
- 지도교수 김원정
- 발행년도 2016
- 학위수여년월 2016. 2
- 학위명 석사
- 학과 및 전공 일반대학원 기계공학과
- 실제URI http://www.dcollection.net/handler/sogang/000000059048
- 본문언어 영어
- 저작권 서강대학교 논문은 저작권보호를 받습니다.
초록/요약
We present the results of a combined experimental and theoretical investigation of drop impact on a fiber. Using high-speed videography, we analyze the dynamics of droplet collision with fibers. Based on the systematic experiments, we identify three outcomes of collision: capturing, single drop falling, and splitting. We demonstrate that the collision outcomes critically depend on the relative magnitudes of the inertial and capillary forces, the gravitational and capillary forces, and the ratio of the fiber thickness to the drop diameter, which is explained through a scale analysis of forces. We also examine the dynamics of the liquid retention on the fiber after the droplet impact, and develop models to predict the residual water mass. Our study can be extended to predicting the remaining droplet, critical problems in air filtration, water collection, and fiber coating.
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