About: Pipe-wall friction in vertical sand-slurry flows

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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	The paper describes the results of extensive laboratory tests of vertical flows of three sand fractions (0.12-mm-, 0.37-mm-, and 1.84-mm sands) in a 150-mm pipe. The tests revealed an interesting phenomenon of a surprisingly low contribution of the medium sand to the total friction of the mixture flow in the vertical pipe. The frictional pressure drop in highly-concentrated flows at high velocities was lower for slurries of the medium sand than for slurries of both the fine sand and the coarse sand. The solids friction at the pipe wall is analyzed taking into account effects of particle-particle interactions and particle-liquid interactions in the boundary layer of a vertical flow of settling slurry. The analysis suggests that the observed phenomenon is associated with the hydrodynamic liquid-lift force acting on solid particles traveling near a pipe wall. The paper describes the results of extensive laboratory tests of vertical flows of three sand fractions (0.12-mm-, 0.37-mm-, and 1.84-mm sands) in a 150-mm pipe. The tests revealed an interesting phenomenon of a surprisingly low contribution of the medium sand to the total friction of the mixture flow in the vertical pipe. The frictional pressure drop in highly-concentrated flows at high velocities was lower for slurries of the medium sand than for slurries of both the fine sand and the coarse sand. The solids friction at the pipe wall is analyzed taking into account effects of particle-particle interactions and particle-liquid interactions in the boundary layer of a vertical flow of settling slurry. The analysis suggests that the observed phenomenon is associated with the hydrodynamic liquid-lift force acting on solid particles traveling near a pipe wall. (en)
Title	Pipe-wall friction in vertical sand-slurry flows Pipe-wall friction in vertical sand-slurry flows (en)
skos:prefLabel	Pipe-wall friction in vertical sand-slurry flows Pipe-wall friction in vertical sand-slurry flows (en)
skos:notation	RIV/68407700:21110/09:00156169!RIV15-MSM-21110___
http://linked.open...avai/riv/aktivita	P S Z
http://linked.open...avai/riv/aktivity	P(GA103/06/0428), S, Z(AV0Z20600510)
http://linked.open...iv/cisloPeriodika	5
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Matoušek, Václav
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	České vysoké učení technické v Praze / Fakulta stavební
http://linked.open...dnocenehoVysledku	333512
http://linked.open...ai/riv/idVysledku	RIV/68407700:21110/09:00156169
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	slurry-flow experiment; off-the-wall lift; collisional stress; solids friction; pressure drop (en)
http://linked.open.../riv/klicoveSlovo	solids friction collisional stress off-the-wall lift slurry-flow experiment pressure drop
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[9F6268300567]
http://linked.open...i/riv/nazevZdroje	Particulate Science and Technology. An International Journal
http://linked.open...in/vavai/riv/obor	BK
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	1 (xsd:int)
http://linked.open...vavai/riv/projekt	Mechanisms of dispersion and friction in coarse-slurry flows
http://linked.open...UplatneniVysledku	2009
http://linked.open...v/svazekPeriodika	27
http://linked.open...iv/tvurceVysledku	Matoušek, Václav
http://linked.open...ain/vavai/riv/wos	000269120700006
http://linked.open...n/vavai/riv/zamer	Dynamics of Fluid Systems and Transformation Processes in Hydrosphere
issn	0272-6351
number of pages	13 (xsd:int)
http://bibframe.org/vocab/doi	10.1080/02726350903133179
http://localhost/t...ganizacniJednotka	21110

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