| 학회 |
한국화학공학회 |
| 학술대회 |
2008년 봄 (04/23 ~ 04/25, 제주ICC) |
| 권호 |
14권 1호, p.1107 |
| 발표분야 |
이동현상 |
| 제목 |
Sensitivity Analysis of 2-D Film Casting Process |
| 초록 |
The sensitivity to the ongoing sinusoidal disturbances has been examined using transient viscoelastic film casting simulation. Amplitude ratios of film thickness at both center and edge position and film width at the take-up with respect to a ongoing disturbance show resonant peaks along the frequency regime, where the frequencies at these points directly correspond to the imaginary parts of the successive leading eigenvalues from the linear stability analysis. The sensitivity results by Newtonian fluid have been compared with those by viscoelastic Phan-Thien and Tanner fluid. Also, effects of two important parameters of film casting process, i.e., the fluid viscoelasticity (Deborah number) and the aspect ratio have been scrutinized. Furthermore, the dichotomous behavior between extension thinning and thickening fluids in sensitivity analysis has been elucidated. It has been found that there exist optimal process conditions making the system less sensitive. |
| 저자 |
최승원1, 신동명1, 이주성2, 정현욱1, 현재천1
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| 소속 |
1고려대, 2LG화학기술원 |
| 키워드 |
film casting; sensitivity; transient simulation; PTT
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| E-Mail |
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| 원문파일 |
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