Semi-empirical formulae for upper plane bed friction

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985874%3A_____%2F10%3A00348904" target="_blank" >RIV/67985874:_____/10:00348904 - 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
Semi-empirical formulae for upper plane bed friction
Original language description
Friction conditions at the top of a mobile bed are discussed for flows in the upper-plane-bed regime, i.e. for the flows with values of the bed Shields parameter larger than approximately 0.6. A formula that evaluates friction of the top of the mobile bed at high shear stress is an important part of predictive models for layered flows in slurry pipes. Recently proposed semi-empirical formula is validated using experimental data from own tests and from literature. Two alternative formulae are proposed. Their performance is satisfactory as shown on a comparison with experimental data for 16 fractions of solids of different sizes and densities in pressurized pipes of 5 different laboratory circuits.
Czech name
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Czech description
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Project
<a href="/en/project/GA103%2F09%2F0383" target="_blank" >GA103/09/0383: Internal structure of settling slurry flows</a><br>
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Proceedings of the 18th International Conference on Hydrotransport
ISBN
978-1-85598-119-5
ISSN
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e-ISSN
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Number of pages
9
Pages from-to
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Publisher name
BHR Group
Place of publication
Cranfield, Bedforshire
Event location
Rio de Janeiro
Event date
Sep 22, 2010
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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