About: Semi-empirical formulae for upper plane bed friction

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Friction conditions at the top of a mobile bed are discussed for flows in the upper-plane-bed regime, i.e. for the flows with values of the bed Shields parameter larger than approximately 0.6. A formula that evaluates friction of the top of the mobile bed at high shear stress is an important part of predictive models for layered flows in slurry pipes. Recently proposed semi-empirical formula is validated using experimental data from own tests and from literature. Two alternative formulae are proposed. Their performance is satisfactory as shown on a comparison with experimental data for 16 fractions of solids of different sizes and densities in pressurized pipes of 5 different laboratory circuits. Friction conditions at the top of a mobile bed are discussed for flows in the upper-plane-bed regime, i.e. for the flows with values of the bed Shields parameter larger than approximately 0.6. A formula that evaluates friction of the top of the mobile bed at high shear stress is an important part of predictive models for layered flows in slurry pipes. Recently proposed semi-empirical formula is validated using experimental data from own tests and from literature. Two alternative formulae are proposed. Their performance is satisfactory as shown on a comparison with experimental data for 16 fractions of solids of different sizes and densities in pressurized pipes of 5 different laboratory circuits. (en)
Title	Semi-empirical formulae for upper plane bed friction Semi-empirical formulae for upper plane bed friction (en)
skos:prefLabel	Semi-empirical formulae for upper plane bed friction Semi-empirical formulae for upper plane bed friction (en)
skos:notation	RIV/67985874:_____/10:00348904!RIV11-GA0-67985874
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA103/09/0383), Z(AV0Z20600510)
http://linked.open...vai/riv/dodaniDat	2011
http://linked.open...aciTvurceVysledku	Matoušek, Václav Krupička, Jan
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav pro hydrodynamiku AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	286884
http://linked.open...ai/riv/idVysledku	RIV/67985874:_____/10:00348904
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	equivalent roughness; experiment; sediment transport; mobile bed (en)
http://linked.open.../riv/klicoveSlovo	experiment sediment transport equivalent roughness mobile bed
http://linked.open...ontrolniKodProRIV	[67AF77D5F878]
http://linked.open...v/mistoKonaniAkce	Rio de Janeiro
http://linked.open...i/riv/mistoVydani	Cranfield, Bedforshire
http://linked.open...i/riv/nazevZdroje	Proceedings of the 18th International Conference on Hydrotransport
http://linked.open...in/vavai/riv/obor	BK
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...vavai/riv/projekt	Internal structure of settling slurry flows
http://linked.open...UplatneniVysledku	2010
http://linked.open...iv/tvurceVysledku	Krupička, Jan Matoušek, Václav
http://linked.open...vavai/riv/typAkce	WRD - Světová
http://linked.open.../riv/zahajeniAkce	2010-09-22 (xsd:date)
http://linked.open...n/vavai/riv/zamer	Dynamics of Fluid Systems and Transformation Processes in Hydrosphere
number of pages	9 (xsd:int)
http://purl.org/ne...btex#hasPublisher	BHR Group
https://schema.org/isbn	978-1-85598-119-5
is http://linked.open...avai/riv/vysledek of	Semi-empirical formulae for upper plane bed friction Semi-empirical formulae for upper plane bed friction Semi-empirical formulae for upper plane bed friction

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