Influence of temperature boundary conditions in the wire-coated process

Abstract

Influence of temperature boundary conditions on the flow field inside the die of the wire-coating process is investigated numerically, using viscous fluids of a Newtonian type for coating material and a finite element method. It is found that changing the die or wire temperature can have significant effects on the flow velocity, and hence flow rate. On the other hand, the heat transfer coefficient between the coat's free surface and its surroundings has only negligible influence. Also, flow rate variation correlates well with induced pressure gradients.