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

dc.contributor.authorFilip, P.
dc.contributor.authorDavid, J.
dc.contributor.authorPivokonsky, R.
dc.date.accessioned2014-12-03T08:36:22Z
dc.date.available2014-12-03T08:36:22Z
dc.date.issued2007
dc.description.abstractPaper presented at the 5th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, South Africa, 1-4 July, 2007.en_US
dc.description.abstractAt 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.librariancs2014en_US
dc.format.extent5 pagesen_US
dc.format.mediumPDFen_US
dc.identifier.citationFilip, 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.isbn9781868546435
dc.identifier.urihttp://hdl.handle.net/2263/42753
dc.language.isoenen_US
dc.publisherInternational Conference on Heat Transfer, Fluid Mechanics and Thermodynamicsen_US
dc.relation.ispartofHEFAT 2007
dc.rightsUniversity of Pretoriaen_US
dc.rights.uriUniversity of Pretoriaen_US
dc.subjectBack extrusionen_US
dc.subjectBehaviour of non-Newtonian materialsen_US
dc.subjectVočadlo modelen_US
dc.subjectRobertson-Stiff modelen_US
dc.titleCharacterisation of non-newtonian fluids using a back-extrusion techniqueen_US
dc.typePresentationen_US

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