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Effect of particle size distribution and concentration on flow behavior of dense slurries
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SYSNO ASEP 0354986 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Effect of particle size distribution and concentration on flow behavior of dense slurries Author(s) Vlasák, Pavel (UH-J) SAI, ORCID, RID
Chára, Zdeněk (UH-J) SAI, ORCID, RIDNumber of authors 2 Source Title Particulate Science and Technology. - : Taylor & Francis - ISSN 0272-6351
Roč. 29, č. 1 (2011), s. 53-65Number of pages 13 s. Language eng - English Country US - United States Keywords concentration effect ; dense complex slurry ; experimental investigation ; flow behavior ; particle size distribution effect ; pressure drop Subject RIV BK - Fluid Dynamics R&D Projects GAP105/10/1574 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z20600510 - UH-J (2005-2011) UT WOS 000286816800006 DOI 10.1080/02726351.2010.508509 Annotation The article deals with experimental investigation of the flow behavior and pressure drop of dense complex slurries containing sand of different particle size distribution (with mean diameters ranging from 0.20 to 1.40 mm), stony dust (mean diameters of 0.008 mm and 0.033 mm), or clay conveyed in water. The slurries were tested using experimental pipeline loops with inner diameters of 17.5 and 26.8 mm. The slurry volume concentrations range from 6% to 40% for sand slurries, from 26% to 48% for stony dust slurries, and from 45% to 51% for stony dust-sand slurries. The study revealed the time-independent yield pseudo-plastic behavior of the concentrated fine-grained stony dust slurries and the possibility of reducing their flow resistance by adding coarse-grained material. The flow behavior of the stony dust slurries can be approximated by the Herschel-Bulkley or the Bingham model in the laminar region and by the Wilson model in the turbulent region. Workplace Institute of Hydrodynamics Contact Soňa Hnilicová, hnilicova@ih.cas.cz, Tel.: 233 109 003 Year of Publishing 2011
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