Number of the records: 1
Influence of velocity gradient on optimisation of the aggregation process and properties of formed aggregates. Part 2. Quantification of the influence of agitation intensity and time on the properties of formed aggregates
- 1.
SYSNO ASEP 0364483 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Influence of velocity gradient on optimisation of the aggregation process and properties of formed aggregates. Part 2. Quantification of the influence of agitation intensity and time on the properties of formed aggregates Author(s) Polášek, Pavel (UH-J) Source Title Journal of Hydrology and Hydromechanics. - : Ústav pro hydromechaniku AV ČR, v. v. i.. - : Ústav hydrológie SAV - ISSN 0042-790X
Roč. 59, č. 3 (2011), s. 196-205Number of pages 10 s. Language eng - English Country SK - Slovakia Keywords inline high density suspension (IHDS) formation process ; aggregation phases ; aggregate properties ; compactness ; relative density of aggregates Subject RIV BK - Fluid Dynamics R&D Projects GA103/07/1016 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z20600510 - UH-J (2005-2011) UT WOS 000295950800005 DOI 10.2478/v10098-011-0016-6 Annotation The follow up research into the IHDS process was carried out with a Couette device. The effects of the agitation intensity (G) and the agitation time on the kinetics and the mechanism of the aggregation process were studied. The very favourable influence of high agitation intensity for the formation of more compact and dense aggregates was confirmed. It was also proved that the agitation intensity and time are the inherent means influencing the properties of the resultant aggregates such as their size, shape, density and homogeneity. It was confirmed that the aggregation process passes through a minimum. Furthermore, it was verified that the aggregation process takes place in four consecutive phases, namely the phase of a) formation, b) compaction, c) steady (equilibrium) state and d) inner restructuring. The pattern of the aggregates development in these phases remains the same irrespective of the magnitude of G applied but the time at which these phases are completed is G dependent. Workplace Institute of Hydrodynamics Contact Soňa Hnilicová, hnilicova@ih.cas.cz, Tel.: 233 109 003 Year of Publishing 2012
Number of the records: 1