Comment on: ‘‘Letter to the Editor: Steep wave fronts on extrudates of polymer melts and solutions,’’ by D. D. Joseph and Y. Joe Liu

Kurtz, S. J.

doi:10.1122/1.550744

Journal of Rheology

1996

DOI: 10.1122/1.550744

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Comment on: ‘‘Letter to the Editor: Steep wave fronts on extrudates of polymer melts and solutions,’’ by D. D. Joseph and Y. Joe Liu

S. J. Kurtz¹

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On numerical Simulations of Polymer Extrusion Instabilities

Achilleos¹,

Georgiou

Hatzikiriakos³

2002

Applied Rheology

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The objective of this study is mainly to review recent work concerning the numerical modeling of the stick-slip and gross melt fracture polymer extrusion instabilities. Three different mechanisms of instability are discussed: (a) combination of nonlinear slip with compressibility; (b) combination of nonlinear slip with elasticity; and (c) constitutive instabilities. Furthermore, preliminary numerical simulations of the time-dependent, compressible extrudate-swell flow of a Carreau fluid with slip at the wall, using a realistic macroscopic slip equation that is based on experimental data for a high-density polyethylene, are presented.

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On numerical Simulations of Polymer Extrusion Instabilities

Achilleos¹,

Georgiou

Hatzikiriakos³

2002

Applied Rheology

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show abstract

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Comment on: ‘‘Letter to the Editor: Steep wave fronts on extrudates of polymer melts and solutions,’’ by D. D. Joseph and Y. Joe Liu

Cited by 1 publication

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On numerical Simulations of Polymer Extrusion Instabilities

On numerical Simulations of Polymer Extrusion Instabilities

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