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Experimental investigation of fine-grained settling slurry flow behaviour in inclined pipe sections
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SYSNO ASEP 0504067 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Experimental investigation of fine-grained settling slurry flow behaviour in inclined pipe sections Author(s) Vlasák, Pavel (UH-J) SAI, ORCID, RID
Chára, Zdeněk (UH-J) SAI, ORCID, RID
Matoušek, Václav (UH-J) ORCID, SAI, RID
Konfršt, Jiří (UH-J) SAI, ORCID, RID
Kesely, Mikoláš (UH-J) ORCIDSource Title Journal of Hydrology and Hydromechanics. - : Ústav pro hydromechaniku AV ČR, v. v. i.. - : Ústav hydrológie SAV - ISSN 0042-790X
Roč. 67, č. 2 (2019), s. 113-120Number of pages 8 s. Publication form Print - P Language eng - English Country SK - Slovakia Keywords settling slurry ; effects of pipe inclination ; concentration distribution ; pressure drops ; deposition limit ; gamma-ray radiometry Subject RIV BK - Fluid Dynamics OECD category Fluids and plasma physics (including surface physics) R&D Projects GA17-14271S GA ČR - Czech Science Foundation (CSF) Method of publishing Open access Institutional support UH-J - RVO:67985874 UT WOS 000463351400001 EID SCOPUS 85064153757 DOI 10.2478/johh-2018-0039 Annotation For the safe and economical design and operation of freight pipelines it is necessary to know slurry flow behaviour in inclined pipe sections, which often form significant part of pipelines transporting solids. Fine-grained settling slurry was investigated on an experimental pipe loop of inner diameter D = 100 mm with the horizontal and inclined pipe sections for pipe slopes ranging from -45 degrees to + 45 degrees. The slurry consisted of water and glass beads with a narrow particle size distribution and mean diameter d(50) = 180 mu m. The effect of pipe inclination, mean transport volumetric concentration, and slurry velocity on flow behaviour, pressure drops, deposition limit velocity, and concentration distribution was studied. The study revealed a stratified flow pattern of the studied slurry in inclined pipe sections. Frictional pressure drops in the ascending pipe were higher than that in the descending pipe, the difference decreased with increasing velocity and inclination. For inclination less than about 25 degrees the effect of pipe inclinations on deposition limit velocity and local concentration distribution was not significant. For descending pipe section with inclinations over -25 degrees no bed deposit was observed. Workplace Institute of Hydrodynamics Contact Soňa Hnilicová, hnilicova@ih.cas.cz, Tel.: 233 109 003 Year of Publishing 2020 Electronic address http://hdl.handle.net/11104/0295775
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