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Local concentration distribution of settling slurry flow in inclined pipe sections
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SYSNO ASEP 0517702 Document Type C - Proceedings Paper (int. conf.) R&D Document Type O - Ostatní Title Local concentration distribution of settling slurry flow 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
Kesely, Mikoláš (UH-J) ORCID
Krupička, Jan (UH-J) SAI, RID
Konfršt, Jiří (UH-J) SAI, ORCID, RIDSource Title 19th International Conference on Transport & Sedimentation of Solid Particles. - Cape Town : Wydawnictwo Uniwersytetu Przyrodniczego we Wrocławiu, 2019 / Sobota J. ; Haldenwang R. - ISSN 0867-7964 - ISBN 978-83-7717-323-7 Pages s. 229-236 Number of pages 8 s. Publication form Online - E Action International Conference on Transport and Sedimentation of Solid Particles /19./ Event date 24.09.2019 - 27.09.2019 VEvent location Cape Town Country ZA - South Africa Event type WRD Language eng - English Country ZA - South Africa Keywords settling slurry ; concentration distribution ; pipe inclination ; deposition limit 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) Institutional support UH-J - RVO:67985874 EID SCOPUS 85077211014 Annotation Freight pipelines often contain inclined sections affecting the minimum velocity at which the pipelines should operate without a danger of pipe blockage. Narrow-graded sand-water slurry was investigated on an experimental pipe loop with inclinable pipe sections of inner diameter 100 mm in the Institute of Hydrodynamics in Prague. The investigation was focused on the effect of the pipe inclination, slurry concentration and velocity on the local concentration distribution and deposition limit. The settling slurries tend to stratify in horizontal and inclined pipe sections, typically exhibiting partial or fully stratified flow. Visualization and local concentration measurements revealed the stratified flow pattern of the settling slurry in inclined pipe sections. The solids distribution varied considerably with the pipe inclination, the degree of stratification was sensitive to pipe inclination and depended on slurry concentration and flow velocity. The observed concentration profiles showed different degrees of stratification for the positive and negative slope of the pipe. The ascending flow was less stratified than the corresponding descending flow. Workplace Institute of Hydrodynamics Contact Soňa Hnilicová, hnilicova@ih.cas.cz, Tel.: 233 109 003 Year of Publishing 2020
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