Variational Principle Based Stability Analysis of Non-isothermal Film Blowing Process for Non-Newtonian Fluids

Abstract

In this work, a stable numerical scheme for the film blowing stability analysis, considering the variational principle based film blowing model, non‐isothermal processing conditions and non‐Newtonian behavior of the polymer, has been proposed and used with the aim to reveal the effect of flow activation energy, heat transfer coefficient, mass flow rate and melt temperature on the film blowing stability. It has been found that the model predictions are in good agreement with the corresponding experimental data taken from the open literature.