| 학회 | 한국화학공학회 |
| 학술대회 | 2016년 봄 (04/27 ~ 04/29, 부산 BEXCO) |
| 권호 | 22권 1호, p.771 |
| 발표분야 | 이동현상 |
| 제목 | Interfacial shape of liquid films |
| 초록 | Liquid film flow occurs in many application such as dip coating. Interfacial profile is important to determine film thickness, especially for flow with low capillary number. In this low capillary number regime, the balance among viscous drag, surface tension, and gravity determines interfacial shape and film thickness. For liquid film on substrate in upward motion, commonly referred as the Landau-Levich problem, Kheshgi (1992) extended classical theory for infinite pool to consider confined geometry by integrating the simplified basic integrodifferential equation with arc length coordinate (Higgins 1979), but did not include two dimensional characteristics, i.e., normal viscous stress. This two dimensional characteristics was considered by Esmail and Hummel (1975). However, curvature of interface is greatly approximated, and the dynamic region, where film is entrained, cannot be matched static region properly in their study. Unfortunately, it fails to add directly two dimensional characteristics to Kheshgi’s model due to arc length coordinate. In this study, the problem is resolved, and is compared with computational results. |
| 저자 | 김온유, 남재욱 |
| 소속 | 성균관대 |
| 키워드 | 이동현상; 유체역학 |
| 원문파일 | 초록 보기 |
