Simulation of extrudate swell using an extended finite element method

Y.J. Choi, M.A. Hulsen

Research output: Contribution to journalArticleAcademicpeer-review

15 Citations (Scopus)
5 Downloads (Pure)

Abstract

An extended finite element method (XFEM) is presented for the simulation of extrudate swell. A temporary arbitrary Lagrangian-Eulerian (ALE) scheme is incorporated to cope with the movement of the free surface. The main advantage of the proposed method is that the movement of the free surface can be simulated on a fixed Eulerian mesh without any need of re-meshing. The swell ratio of an upper-convected Maxwell fluid is compared with those of the moving boundary-fitted mesh problems of the conventional ALE technique, and those of Crochet & Keunings. The proposed XFEM combined with the temporary ALE scheme can provide similar accuracy to the boundary-fitted mesh problems for low Deborah numbers. For high Deborah numbers, the method seems to be more stable for the extrusion problem.
Original languageEnglish
Pages (from-to)147-154
Number of pages8
JournalKorea-Australia Rheology Journal
Volume23
Issue number3
DOIs
Publication statusPublished - 2011

Fingerprint Dive into the research topics of 'Simulation of extrudate swell using an extended finite element method'. Together they form a unique fingerprint.

Cite this