Analysis and optimization of meshing techniques for cfd simulations of rubber extrusion dies
- Carlos Zurrón Barragán 1
- Rubén Urraca Valle 1
- Julio Fernández Ceniceros 1
- Rubén Escribano García 1
- Manuel Julián Alía Martínez 1
- Francisco Javier Martínez de Pisón 1
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1
Universidad de La Rioja
info
Publisher: Asociación Española de Ingeniería de Proyectos (AEIPRO)
ISBN: 978-84-617-2742-1
Year of publication: 2014
Pages: 1099-1108
Congress: CIDIP. Congreso Internacional de Ingeniería de Proyectos (18. 2014. Alcañiz)
Type: Conference paper
Abstract
Rubber profile manufacturers are aiming to develop CFD models of their extrusion dies to optimize die design. Real extrusion dies are characterized by an intricate geometry derived from the elaborated profiles demanded by automotive industry as well as the turning and narrowing ducts in dies. To obtain well performing simulations, the major challenge remains in developing an adequate mesh for these complex geometries without an important increase of the computational cost. This communication deals with the most frequent drawbacks that arise when meshing real extrusion dies. Different meshing techniques for creating CFD models are compared in suitability. On one hand, we use different elements with distinct shape and of different interpolating polynomial order, and in the other hand we vary the global number of elements and the number of elements per each region. The results show that it is critical to use at least three or four elements for the smallest regions of the domain for obtaining reliable results. Regarding meshing techniques, hexahedral meshes achieve the same degree of accuracy as the tetrahedral ones with a smaller number of elements or with interpolating polynomial of less order.