NONISOTHERMAL FILM CASTING OF A VISCOUS FLUID
W. S. Smith
Abstract
Finite element models were developed for simulating one-dimensional (1D) and two-dimensional (2D) nonisothermal film casting of a viscous polymer. These models accommodate inertia and gravity, allow the thickness to vary across the width of the film (in the 2D case), but exclude die swell and sag. The numerical algorithm is based on a Newton-Raphson approach to solve simultaneously for the velocity, thickness, temperature and the width of the film. Numerical simulations using the finite element model found the following:
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