An iterative approach to the thermal Newtonian blown film model


  • James Bennett
  • John Shepherd
  • William Blyth



Film blowing, by which thin polymer film is manufactured, is an industrial process with products used in a wide range of applications. Modelling of this process requires solving the highly nonlinear differential equations necessary to describe the complex chemical and physical interactions involved. Earlier work applied a mixture of analytic and numerical techniques to this modelling when the polymer involved was a Newtonian fluid operating under isothermal conditions. Subsequent calculations extended this analysis to the non-isothermal Newtonian film. However, the numerical procedures used were found to be computationally expensive. We apply a more robust finite element approach to these computations, that avoids the difficulties of the earlier methods, and is an improvement on these previous efforts. References
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