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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