An Explicit Formulation of Bed Friction Factor for Sheet Flow

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F14%3A00226190" target="_blank" >RIV/68407700:21110/14:00226190 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
An Explicit Formulation of Bed Friction Factor for Sheet Flow
Original language description
In slurry transport 4 main flow regimes can be distinguished. Considering constant concentration and increasing the flow velocity starting at zero, these are the fixed or stationary bed regime, the sliding bed regime, the heterogeneous regime and the homogeneous regime. Above a certain threshold velocity above the bed, sheet flow will occur, forming a layer of moving particles with an increasing velocity and a decreasing concentration, upwards with respect to the fixed bed. This sheet flow layer changesthe apparent bed friction coefficient. Below the threshold velocity it is often assumed that the Darcy-Weisbach friction factor can be determined by using the particle diameter as the bed roughness. However when sheet flow occurs it appears that the roughness to be applied hardly depends on the particle diameter. Many relations have been derived relating the relative roughness to the Shields parameter. Most of these relations have an implicit character and also require derived. The adva
Czech name
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Czech description
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Project
<a href="/en/project/GAP105%2F12%2F1082" target="_blank" >GAP105/12/1082: Modeling of intense transport of sediment in flood flow</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Proceedings of the 15th International Freight Pipeline Society Symposium
ISBN
978-80-87117-12-5
ISSN
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e-ISSN
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Number of pages
16
Pages from-to
344-359
Publisher name
Ústav pro hydrodynamiku AV ČR, v.v.i.
Place of publication
Praha
Event location
Praha
Event date
Jun 24, 2014
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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