| 학회 | 한국화학공학회 |
| 학술대회 | 2011년 봄 (04/27 ~ 04/29, 창원컨벤션센터) |
| 권호 | 17권 1호, p.694 |
| 발표분야 | 이동현상 |
| 제목 | Simulation of droplets on a spider silk with various wetting conditions and geometries |
| 초록 | Many biological surfaces have special structures to control their interaction with water. Spider web also has significant fiber structure that can collect drops on the wetted spider silk as they condensate. To understand the dynamics of the phenomenon, we simulated the droplets on fiber with COMSOL Multiphysics using level-set method. The fiber is divided into two different regions. The hydrophilic region is at the middle of the fiber and the hydrophobic regions are at each side of the fiber. The water condensation occurs in the hydrophobic region. When the droplets become large enough to overcome the hysteresis effects, we can see the movement of the droplets dynamically. In this simulation, as water condensation is continued, small water droplets get bigger. As they reach the hydrophilic region, they start moving to each other by difference of Laplace pressure and coalesce. In addition, we considered the effect of different fiber geometries. The droplets on a spindle-shaped fiber move more easily than those on a straight fiber. The study about the droplet coalescence of a fiber will be helpful to many applications such as fibrous filter systems. |
| 저자 | 안명모, 홍진석, 강인석 |
| 소속 | 포항공과대 |
| 키워드 | level-set method; spider web; wetting phenomena; drop on fiber |
| 원문파일 | 초록 보기 |
