Steady Flow of a Two-Dimensional Liquid Curtain Under Pressure

Abstract

ABSTRACT:We use finite elements and the full-Newton iteration method to solve the steady, two-dimensional flow of a Newtonian planar film issuing from a slit under a pressure difference, in the presence of gravity and surface tension. The simulated film shapes agree with available experimental data within the range of the experimental error. The numerical calculations show that the shape of the film depends strongly on the imposed pressure difference, inertia and gravity, and is rather insensitive to surface tension.