Local velocity measurements in gravity-driven flows with intense bedload of coarse particles

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F16%3A00311231" target="_blank" >RIV/68407700:21110/16:00311231 - 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
Local velocity measurements in gravity-driven flows with intense bedload of coarse particles
Original language description
A broad dataset of sheet-flow experiments with granular material under steady and uniform conditions is presented in this paper with the focus on measurements of streamwise velocity component. Three different lightweight sediment fractions were used in total number of 128 experimental runs in wide range of sheet-flow modes which are being represented by dimensionless Shields parameter from 0.3 up to 2.3. The velocity information is obtained using three independent methods: Prandtl probe (PT), Ultrasonic Velocity Profiler (UVP) and Acoustic Doppler Velocity Profiler (ADVP). The measurement methods are compared to each other by means of their limitations and provided results in absolute and dimensionless velocity magnitudes. The results are consistent for all experimental runs and are further used for description of flow internal structure. The capability of individual measuring methods is demonstrated here on linear velocity distribution model in the transport layer with varying thickness of basal sublayer on the boundary of stationary bed and transport layer
Czech name
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Czech description
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Project
<a href="/en/project/GA16-21421S" target="_blank" >GA16-21421S: Analysis of Granular-Liquid Channel Flows based on Kinetic Theory Approach</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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