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

โœ Scribed by G. Russo; T.N. Phillips

Publisher
Elsevier Science
Year
2011
Tongue
English
Weight
772 KB
Volume
43
Category
Article
ISSN
0045-7930

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โœฆ Synopsis

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.

๐Ÿ“œ SIMILAR VOLUMES

Numerical simulation of steady planar di
Numerical simulation of steady planar die swell for a Newtonian fluid using the spectral element method
โœ G. Russo; T.N. Phillips ๐Ÿ“‚ Article ๐Ÿ“… 2010 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 944 KB

This paper is concerned with two dimensional numerical simulations of plane extrusion of a Newtonian fluid. The problem is discretized using the spectral element method and the free surface is evolved according to an ALE treatment. Numerical simulations are performed over a wide range of Reynolds an