KINETIC THEORY BASED APPROACH TO MODELLING OF SEGREGATION IN INTENSE BIMODAL BED LOAD TRANSPORT
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F17%3A00313676" target="_blank" >RIV/68407700:21110/17:00313676 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
KINETIC THEORY BASED APPROACH TO MODELLING OF SEGREGATION IN INTENSE BIMODAL BED LOAD TRANSPORT
Original language description
Intense bed load grains are transported over an erodible bed through a transport layer. The local concentration of grains varies considerably across the transport layer from zero at the top of the layer to values near the bed concentration at the bottom of the layer. Kinetic theory (KT) offers constitutive relations which relate local granular stresses with local concentration and velocity (gradient) in collision-dominated granular flows. Extended kinetic theory takes care of flows at high concentrations where clustering of grains dominates over binary collisions. The goal of the present work is to test the kinetic theory based approach by Larcher and Jenkins to modelling of a segregation process in intense bimodal bed load at conditions observed in our tilting-flume experiments. For the bimodal flows, we observed a development of a sliding layer of finer grains at the top of the deposit as a result of the segregation process. We show that the development of such a layer is also a result of the kinetic-theory based model simulating segregation of two fractions which differ in grain size.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20102 - Construction engineering, Municipal and structural engineering
Result continuities
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)
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
18th International Conference on Transport & Sedimantation of Solid Particles
ISBN
978-83-7717-269-8
ISSN
0867-7964
e-ISSN
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Number of pages
8
Pages from-to
409-416
Publisher name
Wroclaw University of Environmental And Life Sciences
Place of publication
Wroclaw
Event location
Praha
Event date
Sep 11, 2017
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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