Effect of air pressure difference on the stability and sensitivity of simplified curtain drawing flow

Si Hyung Lee, Suk Il Youn, Joo Sung Lee, Hyun Wook Jung, Jae Chun Hyun

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Stability and sensitivity of the curtain drawing flow have been investigated by employing the simplified onedimensional viscocapillary model. A time-dependent model has been derived using the lubrication approximation and integral momentum balance approach of two-dimensional curvilinear Navier-Stokes equations. Process stability and sensitivity have been examined by considering linear stability and frequency response methods for a linearized curtain system, respectively.Among the process conditions affecting the curtain dynamics, the effect of air pressure difference across the curtain has been mainly focused upon. It is shown that the air pressure difference makes the system less stable and more sensitive to disturbances, leading to curtain deflection and a slightly longer trajectory.

Original languageEnglish
Pages (from-to)524-528
Number of pages5
JournalJournal of Chemical Engineering of Japan
Issue number7
Publication statusPublished - 2011 Jan 1



  • Air pressure difference
  • Curtain coating
  • Frequency response
  • Linear stability
  • Viscocapillary model

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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