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

    Research output: Contribution to journalArticlepeer-review

    3 Citations (Scopus)

    Abstract

    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
    Volume44
    Issue number7
    DOIs
    Publication statusPublished - 2011

    Keywords

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

    ASJC Scopus subject areas

    • General Chemistry
    • General Chemical Engineering

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