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Shear‐Thinning effects on dip coating
Author(s) -
Tanguy P.,
Choplin L.,
Fortin M.
Publication year - 1985
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450630402
Subject(s) - shear thinning , rheology , materials science , coating , thinning , finite element method , discretization , shear (geology) , elasticity (physics) , composite material , dip coating , mechanics , mathematics , structural engineering , physics , engineering , mathematical analysis , ecology , biology
The dip coating operation with shear‐thinning fluids is simulated by the Augmented Lagrangian Method coupled to a finite element discretization. Numerical predictions of coating thickness and meniscus shape compared with experimental data exhibit a very poor agreement. The discrepancy of results is explained by the inadequacy of shear‐thinning rheological models to describe the dynamics of the coating process in a non‐purely viscometric situation and also by the presence of a weak level of elasticity in the fluids used.