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Deposition limit velocity: Effect of particle size distribution
Ceske vysoke uceni technicke v Praze, Department of Hydraulics and Hydrology, Prague, Czech Republic.
GIW Industries, United States.
GIW Industries, United States.
GIW Industries, United States.
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2017 (English)In: International Conferences on Transport and Sedimentation of Solid Particles 2017 / [ed] Matousek V.,Sobota J.,Vlasak P., Wydawnictwo Uniwersytetu Przyrodniczego we Wroclawiu , 2017, p. 217-224Conference paper, Published paper (Refereed)
Abstract [en]

Industrial settling slurries often consist of particles of very different sizes; the particle size distribution may cover sizes which differ with two orders of magnitude. A broad particle size distribution affects parameters of slurry flow including deposition limit velocity. We present experimental results of the deposition limit velocity collected during a comprehensive experimental campaign testing slurry flows composed of solids of different fractions in the GIW Hydraulic Laboratory in 2016. Four narrow graded fractions (carrier fluid, pseudo-homogeneous, heterogeneous, and stratified) were tested in permutations from the individual components to the complete mixture at various concentrations. The primary experiments were carried out in a 203-mm pipe, and selected corresponding experiments were repeated in a 103-mm pipe. The experimental results show that interactions among components affect the resulting deposition limit velocity in flows of broadly graded settling slurries. The effect of particle size distribution on the deposition limit velocity is not benign. The deposit velocity is not necessarily lower in a flow of slurry composed of four components than in slurry flow of one component with the highest deposit velocity from the four components. We discuss possible modifications of a deposit velocity predictive model in order to take effects of a broad particle size distribution into account.

Place, publisher, year, edition, pages
Wydawnictwo Uniwersytetu Przyrodniczego we Wroclawiu , 2017. p. 217-224
Series
Zeszyty naukowe Akademii Rolniczej we Wrocławiu Konferencje, ISSN 1232-3071
National Category
Water Engineering
Research subject
Water Resources Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-67159Scopus ID: 2-s2.0-85038104200ISBN: 9788377172698 (print)OAI: oai:DiVA.org:ltu-67159DiVA, id: diva2:1170762
Conference
18th International Conferences on Transport and Sedimentation of Solid Particles, T and S 2017; Prague; Czech Republic; 11-15 September 2017
Available from: 2018-01-04 Created: 2018-01-04 Last updated: 2018-01-09Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
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Language
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Output format
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