Abstract
Numerical results of the simulation of the Giesekus model in ω–D form, which has previously been introduced in Part I of this study, are presented. The model has been applied to the flow of a concentrated polymer solution through a planar 3.97:1 contraction. To obtain an accurate fit of the rheological properties of the fluid a four-mode model is used. The predictions of the numerical simulations are directly compared with the experimental results published by Quinzani et al. in 1994. For the velocity fields a good quantitative agreement is reached, especially in the upstream channel. Regarding the shear stress and first normal stress difference, qualitative predictions of the experimental profiles are obtained.
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Received: 5 January 1999 Accepted: 20 May 1999
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Ryssel, E., Brunn, P. The Giesekus fluid in ω–D form for steady two-dimensional flows . Rheol. Acta 38, 423–436 (1999). https://doi.org/10.1007/s003970050193
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DOI: https://doi.org/10.1007/s003970050193