EFFECT OF GRAIN DENSITY ON PLANE BED FRICTION

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F15%3A00232292" target="_blank" >RIV/68407700:21110/15:00232292 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

EFFECT OF GRAIN DENSITY ON PLANE BED FRICTION

Popis výsledku v původním jazyce

Sediment-transport experiments with different fractions of model sediment in a tilting flume are analyzed with the aim of evaluating the influence of the bed grain density on bed friction in the lower- and upper plane bed regimes. The water-flow based experiments covered 4 fractions of sediment from which 2 were glass beads and the other 2 plastic grains of different density. The experiments were carried out for a broad range of installed flow rates and flow depths producing a broad range of values of the bed Shields parameter and the delivered concentration of sediment. The paper discusses and quantifies how different densities of sediment grains affect the bed friction coefficient in flows with no delivered concentration of sediment (the lower planebed regime), and with high concentration of bed load (the upper plane bed regime). In the lower plane bed regime, the bed friction coefficient can be determined using the logarithmic law for the hydraulically rough boundary with the equiv

Název v anglickém jazyce

EFFECT OF GRAIN DENSITY ON PLANE BED FRICTION

Popis výsledku anglicky

Sediment-transport experiments with different fractions of model sediment in a tilting flume are analyzed with the aim of evaluating the influence of the bed grain density on bed friction in the lower- and upper plane bed regimes. The water-flow based experiments covered 4 fractions of sediment from which 2 were glass beads and the other 2 plastic grains of different density. The experiments were carried out for a broad range of installed flow rates and flow depths producing a broad range of values of the bed Shields parameter and the delivered concentration of sediment. The paper discusses and quantifies how different densities of sediment grains affect the bed friction coefficient in flows with no delivered concentration of sediment (the lower planebed regime), and with high concentration of bed load (the upper plane bed regime). In the lower plane bed regime, the bed friction coefficient can be determined using the logarithmic law for the hydraulically rough boundary with the equiv

Druh

D - Stať ve sborníku

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

2015

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of 17th International Conference on Transport And Sedimentation of Solids Particles

ISBN

978-83-927084-8-3

ISSN

0867-7964

e-ISSN

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Počet stran výsledku

8

Strana od-do

167-174

Název nakladatele

Wroclaw University of Environmental And Life Sciences

Místo vydání

Wroclaw

Místo konání akce

Delft

Datum konání akce

22. 9. 2015

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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