Simplified modeling of slide-fed curtain coating flow

Hyun Wook Jung, Joo Sung Lee, Jae Chun Hyun, See J. Kim, L. E. Scriven

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Simplified model of slide-fed curtain coating flow has been developed and tested in this study. It rests on the sheet profile equations for curtain thickness in curtain flow and its trajectory derived by the integral momentum balance approach of Higgins and Scriven (1979) and Kistler (1983). It also draws on the film profile equation of film thickness variation in flow down a slide. The equations have been 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 curtain affect sheet trajectory and thickness profile. It has been revealed that approximate models can be useful to easily analyze coating flow dynamics without complex computations, giving qualitative agreement with full theory and with experiment.

Original languageEnglish
Pages (from-to)227-233
Number of pages7
JournalKorea Australia Rheology Journal
Volume16
Issue number4
Publication statusPublished - 2004 Dec 1

Fingerprint

curtains
chutes
Trajectories
coatings
Coatings
Surface tension
Film thickness
Momentum
Reynolds number
profiles
trajectories
Air
inertia
newton
inclination
iteration
interfacial tension
film thickness
Experiments
momentum

Keywords

  • Curtain coating
  • Curtain flow
  • Curtain trajectory
  • Integral momentum balance
  • Sheet profile equation
  • Simplified modeling
  • Slide flow

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes

Cite this

Jung, H. W., Lee, J. S., Hyun, J. C., Kim, S. J., & Scriven, L. E. (2004). Simplified modeling of slide-fed curtain coating flow. Korea Australia Rheology Journal, 16(4), 227-233.

Simplified modeling of slide-fed curtain coating flow. / Jung, Hyun Wook; Lee, Joo Sung; Hyun, Jae Chun; Kim, See J.; Scriven, L. E.

In: Korea Australia Rheology Journal, Vol. 16, No. 4, 01.12.2004, p. 227-233.

Research output: Contribution to journalArticle

Jung, HW, Lee, JS, Hyun, JC, Kim, SJ & Scriven, LE 2004, 'Simplified modeling of slide-fed curtain coating flow', Korea Australia Rheology Journal, vol. 16, no. 4, pp. 227-233.
Jung HW, Lee JS, Hyun JC, Kim SJ, Scriven LE. Simplified modeling of slide-fed curtain coating flow. Korea Australia Rheology Journal. 2004 Dec 1;16(4):227-233.
Jung, Hyun Wook ; Lee, Joo Sung ; Hyun, Jae Chun ; Kim, See J. ; Scriven, L. E. / Simplified modeling of slide-fed curtain coating flow. In: Korea Australia Rheology Journal. 2004 ; Vol. 16, No. 4. pp. 227-233.
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