Fluid Mechanics of Cleaning and Decontamination
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  • Programme
    • Upcoming and Past Meetings
    • Webinars
    • Related Conferences
  • Activities
  • Group Members
  • Resources
Authors
Yeckel, A. and Middleman, S.
Title
Removal of a viscous film from a rigid plane surface by an impinging liquid jet
Summary
Experimental investigation of the removal of thin films of viscous liquid (silicone oil) from flat discs of different material by a turbulent coherent water jet impinging normally on the disc. The mass of the silicone oil was measured and compared with the average layer thickness predicted by their model. Their model used the Watson (1964) model to estimate the local wall shear stress imposed on the oil layer by the water film, and a Reynolds lubrication approach to evaluate the velocity in the viscous liquid.  Promising agreement is reported. Effects such as wave formation were not considered.
Novel/notable aspects
Early example of coupled flow in cleaning
Journal
Chem. Eng. Comm. (2007) 50, 165-167.
Cleaning type
Hydrophobic liquid soil (silicone oil)
Shear-induced flow
Thinning of soil layer
Flow Keywords
Impinging turbulent liquid jet
Horizontal disc
Coupled flow (water- viscous liquid)
Theory Keywords
Boundary layer treatment
Lubrication approximation (oil)
Thin films
Coupled flow
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