Experimental Comparison of Inclined Flows with and without Intense Sediment Transport: Flow Resistance and Surface Elevation

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F22%3A00360677" target="_blank" >RIV/68407700:21110/22:00360677 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1061/(ASCE)HY.1943-7900.0002024" target="_blank" >https://doi.org/10.1061/(ASCE)HY.1943-7900.0002024</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1061/(ASCE)HY.1943-7900.0002024" target="_blank" >10.1061/(ASCE)HY.1943-7900.0002024</a>

Result language
angličtina
Original language name
Experimental Comparison of Inclined Flows with and without Intense Sediment Transport: Flow Resistance and Surface Elevation
Original language description
The effect of the intense transport of lightweight sediment without turbulent suspension (Shields numbers of mixture flow from 0.34 to 1.80) on resistance and surface elevation of water flow in an open channel is experimentally examined. Flows over fixed and mobile plane beds, at the same water flowrate and bed slope, are compared. Detailed measurements-including distributions of solids and velocity-permit to identify flow interfaces and determine the role of sediment transport on flow resistance. Two friction factors for mobile bed flows are introduced: one for water only and another one for the mixture. The first seems to be insensitive to the water submergence, while the latter follows the classic formula for the hydraulically rough regime: both increase with respect to the equivalent clear water flow. The water surface elevation seems unaltered by the presence of sediment transport, thus reducing the need for the modelling of the evolution of an erodible bed surface in, at least, some routine applications in fluvial hydraulics. (C) 2022 American Society of Civil Engineers.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
20101 - Civil engineering

Project
<a href="/en/project/GA19-18411S" target="_blank" >GA19-18411S: Modelling of intense collisional sediment transport with turbulent suspension</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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