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dc.contributor.author | Filip, P.![]() |
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dc.contributor.author | David, J.![]() |
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dc.contributor.author | Pivokonsky, R.![]() |
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dc.date.accessioned | 2014-12-03T08:36:22Z | |
dc.date.available | 2014-12-03T08:36:22Z | |
dc.date.issued | 2007 | |
dc.description.abstract | Paper presented at the 5th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, South Africa, 1-4 July, 2007. | en_US |
dc.description.abstract | At present standard rheometers provide sufficiently precise measurements characterising behaviour of non-Newtonian materials. In practice, this accuracy is not always necessary, and the methods providing relatively cheap, fast and sufficient measurements of the rheological characteristics are fully acceptable. Back extrusion - representing one of these methods - is based on plunging of a circular rod into an axisymmetrically located circular cup containing the experimental sample. Formerly this method was applied for a characterisation of power-law, Bingham and Herschel-Bulkley fluids. The aim of this contribution is to present a sufficiently simple user-friendly procedure how to determine the individual rheological parameters appearing in the Vočadlo model (sometimes called Robertson-Stiff one) - yield stress, consistency parameter and flow behaviour index. | en_US |
dc.description.librarian | cs2014 | en_US |
dc.format.extent | 5 pages | en_US |
dc.format.medium | en_US | |
dc.identifier.citation | Filip, P, David, J & Pivokonsky, R 2007, Characterisation of non-newtonian fluids using a back-extrusion technique, Paper presented to the 5th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, South Africa, 1-4 July 2007. | en_US |
dc.identifier.isbn | 9781868546435 | |
dc.identifier.uri | http://hdl.handle.net/2263/42753 | |
dc.language.iso | en | en_US |
dc.publisher | International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics | en_US |
dc.relation.ispartof | HEFAT 2007 | |
dc.rights | University of Pretoria | en_US |
dc.rights.uri | University of Pretoria | en_US |
dc.subject | Back extrusion | en_US |
dc.subject | Behaviour of non-Newtonian materials | en_US |
dc.subject | Vočadlo model | en_US |
dc.subject | Robertson-Stiff model | en_US |
dc.title | Characterisation of non-newtonian fluids using a back-extrusion technique | en_US |
dc.type | Presentation | en_US |