Validation of transport and friction formulae for upper plane bed by experiments in rectangular pipe

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F13%3A00208187" target="_blank" >RIV/68407700:21110/13:00208187 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.ih.savba.sk/jhh/" target="_blank" >http://www.ih.savba.sk/jhh/</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.2478/johh-2013-0016" target="_blank" >10.2478/johh-2013-0016</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Validation of transport and friction formulae for upper plane bed by experiments in rectangular pipe

Popis výsledku v původním jazyce

The paper describes results of validation of authors' recently proposed formulae for sediment transport and bed friction in the upper plane bed regime using laboratory experiments in a pressurized pipe. Flows of mixture of water and fine to medium ballotini (d50 = 0.18 mm) were observed in a rectangular pipe (51 x 51 mm) with a deposit at the bottom of the pipe. A comparison of test results with transport-formula predictions shows a satisfactory match confirming a good prediction ability of the proposedtransport formula at high bed shear. A prediction ability of the friction formulae appears to be less convincing but still reasonable. A joint use of the formulae for transport and friction predicts the delivered concentration of transported sediment within the accuracy range of ? 40 per cent for flows in which transported sediments strongly affect the bed friction, i.e. for flows with delivered concentration of sediment higher than say 3 per cent.

Název v anglickém jazyce

Validation of transport and friction formulae for upper plane bed by experiments in rectangular pipe

Popis výsledku anglicky

The paper describes results of validation of authors' recently proposed formulae for sediment transport and bed friction in the upper plane bed regime using laboratory experiments in a pressurized pipe. Flows of mixture of water and fine to medium ballotini (d50 = 0.18 mm) were observed in a rectangular pipe (51 x 51 mm) with a deposit at the bottom of the pipe. A comparison of test results with transport-formula predictions shows a satisfactory match confirming a good prediction ability of the proposedtransport formula at high bed shear. A prediction ability of the friction formulae appears to be less convincing but still reasonable. A joint use of the formulae for transport and friction predicts the delivered concentration of transported sediment within the accuracy range of ? 40 per cent for flows in which transported sediments strongly affect the bed friction, i.e. for flows with delivered concentration of sediment higher than say 3 per cent.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BK - Mechanika tekutin

OECD FORD obor

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Projekt

<a href="/cs/project/GAP105%2F12%2F1082" target="_blank" >GAP105/12/1082: Modelování intenzivního chodu splavenin za povodňových průtoků</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2013

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Hydrology and Hydromechanics

ISSN

0042-790X

e-ISSN

—

Svazek periodika

61(2)

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

SK - Slovenská republika

Počet stran výsledku

6

Strana od-do

120-125

Kód UT WoS článku

000321482600005

EID výsledku v databázi Scopus

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