Characterisation of non-newtonian fluids using a back-extrusion technique

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dc.contributor.author Filip, P.
dc.contributor.author David, J.
dc.contributor.author Pivokonsky, R.
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 PDF 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


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