Concentration distribution of coarse-grained particle-water mixture in horizontal pipe

0428206 - ÚH 2015 RIV CZ eng C - Conference Paper (international conference)
Vlasák, Pavel - Chára, Zdeněk - Konfršt, Jiří - Krupička, Jan
Concentration distribution of coarse-grained particle-water mixture in horizontal pipe.
Engineering mechanics 2014. Brno: Brno University of Technology, 2014 - (Fuis, V.), s. 684-691. ISBN 978-80-214-4871-1. ISSN 1805-8248.
[Engineering Mechanics 2014. Svratka (CZ), 12.05.2014-15.05.2014]
R&D Projects: GA ČR GAP105/10/1574
Institutional support: RVO:67985874
Keywords : particle-water mixture * horizontal conveying * coarse-grained slurry * gamma-ray radiometry * concentration distribution
Subject RIV: BK - Fluid Dynamics

The paper describes the results of coarse-grained particle-water mixture measurements in an experimental pipeline loop of inner diameter 100 mm. Graded basalt pebbles of mean diameter 11 mm, conveyed by water, were investigated. The concentration distribution measurements were carried out with application of gamma-ray based device. Presented results refer to the effect of mixture velocity and overall concentration on chord-averaged concentration and local concentration distribution in the horizontal pipe. The study revealed that the coarse-grained particle-water mixtures were significantly stratified, solid particles moved principally close to the pipe invert, for higher and moderate flow velocities saltation becomes dominant mode of the sediment transport.
Permanent Link: http://hdl.handle.net/11104/0233608