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On approximation of non-Newtonian fluid flow by the finite element method

✍ Scribed by Petr Sváček

Publisher
Elsevier Science
Year
2008
Tongue
English
Weight
431 KB
Volume
218
Category
Article
ISSN
0377-0427

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✦ Synopsis

In this paper the problem of numerical approximation of non-Newtonian fluid flow with free surface is considered. Namely, the flow of fresh concrete is addressed. Industrial mixtures often behaves like non-Newtonian fluids exhibiting a yield stress that needs to be overcome for the flow to take place, cf.

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It is known that for the numerical approximation of Oldroyd's B model for viscoelastic ¯uid ¯ows some upwinding is needed for the convection of the extra-stress tensor. In this paper we make the numerical analysis of such an approximation with upwinding by the method of characteristics in a ®nite el