| 학회 | 한국화학공학회 |
| 학술대회 | 2003년 봄 (04/25 ~ 04/26, 순천대학교) |
| 권호 | 9권 1호, p.907 |
| 발표분야 | 이동현상 |
| 제목 | Simplified Modeling of Curtain Coating |
| 초록 | In this research an approximate model of curtain coating is being developed and tested. It rests on one-dimensional equations for curtain thickness and trajectory derived by the integral momentum balance approach of Higgins & Scriven (1979) and Kistler (1983); it also draws on the one-dimensional equation of film thickness variation in flow down a slide. The equations are solved in finite difference approximation by Newton iteration with continuation. The results show that how inertia (Reynolds number), surface tension (capillary number), inclination angle of the slide, and air pressure difference across the sheet affect sheet trajectory and thickness profile. Stability with respect to time-dependent thickness variations and sensitivity (frequency response) to oscillations of flow rate, web speed, and other inputs have also been investigated. (Acknowledgement: This study was supported by research grants from the KOSEF through the Applied Rheology Center (ARC) at Korea Unviersity, Seoul, Korea) |
| 저자 | 정현욱1, 현재천1, L. E. Scriven2 |
| 소속 | 1고려대, 2Univ. of Minnesota |
| 키워드 | Curtain coating; simplified modeling; stability |
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| VOD | VOD 보기 |
