Integral flow parameters and material characteristics analysis in through air drying: Part I

A. Modak, S. S. Takagaki, S. Ramaswamy

Research output: Contribution to journalArticle

7 Scopus citations

Abstract

The extension of the Darcy law (the Forchheimer flow equation) relating second-order nonlinear pressure drop with flow velocity is studied during fast transient through air drying of sheets of porous biobased materials such as paper. A range of the paper materials with open structure consistent with tissue and towel products (basis weights 25 and 50 g/m2) made using different production processes are analyzed for the factor-specific influences with regard to changes in the fluid resistance from the removal of moisture from the material interstices. A characteristic dimension suitable for the drying process is applied from viscous and inertial momentum transport analysis.

Original languageEnglish (US)
Pages (from-to)672-684
Number of pages13
JournalDrying Technology
Volume27
Issue number5
DOIs
StatePublished - Jul 17 2009

Keywords

  • Forchheimer equation
  • Inertial term
  • Paper
  • Through air drying
  • Viscous term

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