About: On equivalent roughness of mobile bed at high shear stress

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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 friction conditions at the top of a mobile bed are discussed for flows in the upper-plane-bed regime. A special attention is devoted to flows of the bed Shields parameter bigger than 2. Experimental data for flows at high bed shear are collected from literature and new data are added from own measurements of flows of a 1.36-mm sand slurry in the 100-mm pipe loop of the Institute of Hydrodynamics. The database represents flows of very different solids and covers friction conditions within a broad range of Shields parameters up to the maximum value of about 23. The paper analyses the data in order to evaluate a relationship among the equivalent roughness of the top of the bed and other relevant parameters. A semi-empirical formula is proposed for the equivalent roughness of the bed. The formula is applicable primarily to flows of combined load (contact- and suspended loads together). The friction conditions at the top of a mobile bed are discussed for flows in the upper-plane-bed regime. A special attention is devoted to flows of the bed Shields parameter bigger than 2. Experimental data for flows at high bed shear are collected from literature and new data are added from own measurements of flows of a 1.36-mm sand slurry in the 100-mm pipe loop of the Institute of Hydrodynamics. The database represents flows of very different solids and covers friction conditions within a broad range of Shields parameters up to the maximum value of about 23. The paper analyses the data in order to evaluate a relationship among the equivalent roughness of the top of the bed and other relevant parameters. A semi-empirical formula is proposed for the equivalent roughness of the bed. The formula is applicable primarily to flows of combined load (contact- and suspended loads together). (en)
Title	On equivalent roughness of mobile bed at high shear stress On equivalent roughness of mobile bed at high shear stress (en)
skos:prefLabel	On equivalent roughness of mobile bed at high shear stress On equivalent roughness of mobile bed at high shear stress (en)
skos:notation	RIV/68407700:21110/09:00156170!RIV13-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	3
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Matoušek, Václav Krupička, Jan
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	331381
http://linked.open...ai/riv/idVysledku	RIV/68407700:21110/09:00156170
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	bed shear; experiment; hydraulic transport; sediment transport (en)
http://linked.open.../riv/klicoveSlovo	hydraulic transport experiment sediment transport bed shear
http://linked.open...odStatuVydavatele	SK - Slovenská republika
http://linked.open...ontrolniKodProRIV	[5546C72591A2]
http://linked.open...i/riv/nazevZdroje	Journal of Hydrology and Hydromechanics
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	Mechanisms of dispersion and friction in coarse-slurry flows
http://linked.open...UplatneniVysledku	2009
http://linked.open...v/svazekPeriodika	57
http://linked.open...iv/tvurceVysledku	Krupička, Jan Matoušek, Václav
http://linked.open...ain/vavai/riv/wos	000268906900006
http://linked.open...n/vavai/riv/zamer	Dynamics of Fluid Systems and Transformation Processes in Hydrosphere
issn	0042-790X
number of pages	9 (xsd:int)
http://bibframe.org/vocab/doi	10.2478/v10098-009-0018-9
http://localhost/t...ganizacniJednotka	21110
is http://linked.open...avai/riv/vysledek of	On equivalent roughness of mobile bed at high shear stress

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