Polímeros: Ciência e Tecnologia
https://revistapolimeros.org.br/article/doi/10.1590/0104-1428.20250010
Polímeros: Ciência e Tecnologia
Original Article

Analysis of wall-smoothed mesh refinement in polymer melt transient flow

Arthur Henrique Theiss; Diego Alves de Miranda

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Abstract

Several numerical simulation strategies for polymer melt flow have been used to optimize simulation time and reduce numerical errors. It is known that in this type of flow, the emergence of numerical diffusion in the cavity walls is common due to the high stresses caused by highly viscous fluids. In order to avoid uniformly refining the entire mesh and increasing simulation time, a common strategy is to use a localized refinement on the cavity walls. In this context, this study presents a standardization in the smoothing of the mesh on the cavity walls for simulations of transient non-isothermal flow of polymer melts. The main results showed that this type of application is highly efficient and contributes to reducing the time and computational effort of simulations of complex cavities with good accuracy.

 

 

Keywords

injection molds, numerical methodology, molten polymers, smooth mesh refining

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