Flow development in compression of a finite amount of a Bingham plastic |
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| Authors: | Georgios C Florides Andreas N Alexandrou Georgios C Georgiou |
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| Institution: | 1. Mechanical and Manufacturing Engineering, University of Cyprus, Cyprus;2. Department of Mathematics and Statistics, University of Cyprus, P.O. Box 20537, 1678 Nicosia, Cyprus |
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| Abstract: | The flow and shape evolution during the compression of a finite amount of a Bingham plastic is investigated by means of numerical simulations. The problem relates to the popular compression test used for the rheological characterization of non-Newtonian fluids. The flow is modelled in Lagrangian coordinates using the Papanastasiou regularization for the Bingham plastic and a mixed-Galerkin finite element method. Simulations have been performed for compression under both constant load and constant velocity. Results for various Reynolds and Bingham numbers are presented and discussed. |
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| Keywords: | Bingham plastics Squeeze flow Compression test Computational rheology Finite elements |
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