Original title: Concentration distribution and slip velocity of coarse-particle-water mixture in horizontal and inclined pipe sections
Authors: Vlasák, Pavel ; Chára, Zdeněk ; Konfršt, Jiří
Document type: Papers
Conference/Event: Engineering Mechanics 2017 /23./, Svratka (CZ), 20170515
Year: 2017
Language: eng
Abstract: Narrow particle size distribution basalt pebbles of mean particle size 11.5 mm conveyed by water in the pipe sections of different inclination were investigated on an experimental pipe loop of inner diameter D = 100 mm. Mixture flow-behaviour and the concentration distribution were studied in a pipe viewing section and with the application of a gamma-ray densitometer. The study refers to the effect of mixture velocity, overall concentration, and angle of pipe inclination on chord-averaged concentration profiles and local concentration maps. The study revealed that the coarse particle-water mixtures in the inclined pipe sections were significantly stratified, the solid particles moved principally close to the pipe invert, and for higher and moderate flow velocities particle saltation becomes the dominant mode of particle conveying.
Keywords: concentration distribution; Gamma-Ray radiometry; hydraulic conveying; mixture flow behaviour; pipe inclination
Project no.: GA17-14271S (CEP)
Funding provider: GA ČR
Host item entry: Engineering Mechanics 2017, ISBN 978-80-214-5497-2, ISSN 1805-8248

Institution: Institute of Hydrodynamics AS ČR (web)
Document availability information: Fulltext is available on demand via the digital repository of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0272063

Permalink: http://www.nusl.cz/ntk/nusl-320486


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Research > Institutes ASCR > Institute of Hydrodynamics
Conference materials > Papers