Theoretical analysis of roll-over-web surface thin layer coating

Tareq Manzoor*, Muhammad Zafar, Shaukat Iqbal, Kashif Nazar, Muddassir Ali, Mahmood Saleem, Sanaullah Manzoor, Woo Young Kim*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)
3 Downloads (Pure)

Abstract

This study presents the theoretical investigation of a roll-over thin layer formation under the lubrication approximation theory. The set of differential equations derived by lubrication approximation is solved by the optimal homotopy asymptotic method (OHAM) to obtain precise expressions for pressure and velocity gradients. Critical quantities such as velocity, pressure gradient, and coating layer depth are numerically estimated. The impact of parameters affecting the coating and layer formation is revealed in detail. Results indicate that the transport properties of the higher-grade fluid play an essential role in regulating velocity, pressure, and the final coated region. Moreover, couple stress effects on the properties of fluid particles to be coated on roller-surface have also been studied.

Original languageEnglish
Article number691
Number of pages16
JournalCoatings
Volume10
Issue number7
Early online date17 Jul 2020
DOIs
Publication statusPublished - Jul 2020
Externally publishedYes

Keywords

  • Couple stress fluid
  • Lubrication approximation theory
  • Optimal homotopy asymptotic method (OHAM)
  • Roll-over-web coating

ASJC Scopus subject areas

  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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