Numerical computations under visco-inertial regime of the dip coating on fibers

DIEGO M. CAMPANA; SEBASTIÁN UBAL; MARÍA D. GIAVEDONI; FERNANDO A. SAITA

Porto de Galinhas

Workshop; 2nd International Workshop on Complex Physical Phenomena in Materials; 2012

Departamento de Física - Universidade Federal de Pernanbuco, Centre for Advanced Study (CAS) - Norwegian Academy of Science and Letters

The dip coating of a fiber of small radius is studied via a finite element solution of the Navier-Stokes equations. The coating speed is selected within the range corresponding to the visco-capillary regime and the visco-inertial regime. Predictions obtained for the visco-capillary regime are in very good agreement with the Landau-Levich law as well as with published experiments; while those obtained for the visco-inertial regime ?i.e. at coating speeds typical of industrial applications? agree well with published experimental data.