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One-dimensional modeling of concentration distribution in pipe flow of combined-load slurry
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SYSNO ASEP 0428308 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title One-dimensional modeling of concentration distribution in pipe flow of combined-load slurry Author(s) Matoušek, Václav (UH-J) ORCID, SAI, RID
Krupička, Jan (UH-J) SAI, RIDSource Title Powder Technology. - : Elsevier - ISSN 0032-5910
Roč. 260, July (2014), s. 42-51Number of pages 10 s. Publication form Print - P Language eng - English Country CH - Switzerland Keywords hydraulic transport ; sediment transport ; two-phase flow ; experiment ; bed shear Subject RIV BK - Fluid Dynamics R&D Projects GA103/09/0383 GA ČR - Czech Science Foundation (CSF) Institutional support UH-J - RVO:67985874 UT WOS 000336873200007 EID SCOPUS 84898951067 DOI 10.1016/j.powtec.2014.03.070 Annotation A one-dimensional profile of solids concentration ismodeled in a cross section of partially stratified flow of slurry in a pipe. In the flow, a certain proportion of solids is transported as contact load and occupies a sliding bed and a transport layer above the bed. The rest of solid particles is transported as suspended load within and above the transport layer.Amodel based on a vertical distribution of shear stress is proposed to predict a concentration profile in a cross section of such flow. Besides the concentration profile, the model predicts the thickness and velocity of the bed. Furthermore, the model determines a vertical position of the top of the transport layer and a position of the hydrodynamic axis of the flow. Model predictions show a satisfactory match with new experimentally determined profiles collected in slurry flows of four different fractions of glass beads in a 100-mm pipe of our laboratory loop. Workplace Institute of Hydrodynamics Contact Soňa Hnilicová, hnilicova@ih.cas.cz, Tel.: 233 109 003 Year of Publishing 2015
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