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dc.contributor.authorWelahettige, Prasanna Kumara Welahetti
dc.contributor.authorLundberg, Joachim
dc.contributor.authorBjerketvedt, Dag
dc.contributor.authorLie, Bernt
dc.contributor.authorVågsæther, Knut
dc.date.accessioned2020-03-09T08:51:47Z
dc.date.available2020-03-09T08:51:47Z
dc.date.created2020-01-21T11:39:20Z
dc.date.issued2019
dc.identifier.citationJournal of Petroleum Exploration and Production Technology. 2019, 1-11.en_US
dc.identifier.issn2190-0558
dc.identifier.urihttps://hdl.handle.net/11250/2645937
dc.descriptionThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were madeen_US
dc.description.abstractOne-dimensional model of non-Newtonian turbulent flow in a non-prismatic channel is challenging due to the difficulty of accurately accounting for flow properties in the 1-D model. In this study, we model the 1-D Saint–Venant system of shallow water equations for water-based drilling mud (non-Newtonian) in open Venturi channels for steady and transient conditions. Numerically, the friction force acting on a fluid in a control volume can be subdivided, in the 1-D drilling mud modelling and shallow water equations, into two terms: external friction and internal friction. External friction is due to the wall boundary effect. Internal friction is due to the non-Newtonian viscous effect. The internal friction term can be modelled using pure non-Newtonian viscosity models, and the external friction term using Newtonian wall friction models. Experiments were carried out using a water-based drilling fluid in an open Venturi channel. Density, viscosity, flow depth, and flow rate were experimentally measured. The developed approach used to solve the 1-D non-Newtonian turbulence model in this study can be used for flow estimation in oil well return flow.en_US
dc.language.isoengen_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.titleOne-dimensional model of turbulent flow of non-Newtonian drilling mud in non-prismatic channelsen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionpublishedVersionen_US
dc.rights.holder© The Author(s) 2019en_US
dc.source.pagenumber1-11en_US
dc.source.journalJournal of Petroleum Exploration and Production Technologyen_US
dc.identifier.doi10.1007/s13202-019-00772-9
dc.identifier.cristin1779081
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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