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Spectral element predictions of die-swell for Oldroyd-B fluids

Russo, Giancarlo and Phillips, Timothy Nigel 2011. Spectral element predictions of die-swell for Oldroyd-B fluids. Computers & Fluids 43 (1) , pp. 107-118. 10.1016/j.compfluid.2010.09.028

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This paper is concerned with two dimensional numerical simulations of plane extrusion of a viscoelastic fluid. The fluid is modelled using the Oldroyd-B and UCM constitutive equations. The problem is discretized using the spectral element method and the free surface is evolved using a Arbitrary Lagrangian Eulerian (ALE) technique. Numerical simulations are performed over an wide range of parameters. The influence of Weissenberg number and viscosity ratio on the swelling ratio and exit pressure loss are investigated and comparisons with previous results in the literature are presented. The range of validity of Tanner’s theory is investigated.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Advanced Research Computing @ Cardiff (ARCCA)
Subjects: Q Science > QA Mathematics
Uncontrolled Keywords: Spectral element method ; Free surface flow ; Die-swell ; Oldroyd-B model ; UCM model ; Swelling ratio
Publisher: Elsevier
ISSN: 0045-7930
Last Modified: 04 Jun 2017 02:47

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