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Gravity and inertia effects in plate coating

Abstract : Coating processes are of technological interest. We focus here on the extraction of a vertical plate out of a wetting liquid. We first summarize the Landau-Levich-Derjaguin theory, including the gravity corrections which have been proposed in particular by White and Tallmadge. We propose a new numerical solution to the problem. Then, we discuss further developments: for liquids of low viscosity, it is shown that above a threshold in capillary number, the film is thickened because of inertia. A simple scaling argument is proposed for predicting the location of the threshold.
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Alain de Ryck, D Quere. Gravity and inertia effects in plate coating. Journal of Colloid and Interface Science, Elsevier, 1998, 203 (2), pp.278-285. ⟨10.1006/jcis.1998.5444⟩. ⟨hal-01652393⟩

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