Počet záznamů: 1  

Drag reduction of dense fine-grained slurries

  1. 1.
    SYSNO ASEP0352181
    Druh ASEPJ - Článek v odborném periodiku
    Zařazení RIVJ - Článek v odborném periodiku
    Poddruh JČlánek ve WOS
    NázevDrag reduction of dense fine-grained slurries
    Tvůrce(i) Vlasák, Pavel (UH-J) SAI, ORCID, RID
    Chára, Zdeněk (UH-J) SAI, ORCID, RID
    Štern, Petr (UH-J)
    Celkový počet autorů3
    Zdroj.dok.Journal of Hydrology and Hydromechanics. - : Ústav pro hydromechaniku AV ČR, v. v. i.. - : Ústav hydrológie SAV - ISSN 0042-790X
    Roč. 58, č. 4 (2010), s. 261-270
    Poč.str.10 s.
    Jazyk dok.eng - angličtina
    Země vyd.SK - Slovensko
    Klíč. slovakaolin slurry ; drag reduction ; experimental investigation ; peptization ; slurry rheology
    Vědní obor RIVBK - Mechanika tekutin
    CEPGAP105/10/1574 GA ČR - Grantová agentura ČR
    CEZAV0Z20600510 - UH-J (2005-2011)
    UT WOS000286574200005
    DOI10.2478/v10098-010-0024-y
    AnotaceForces acting in the slurry among particles strongly affect the flow behaviour of highly concentrated fine-grained slurries. The attractive forces initiate a coagulation process, which gives rise to voluminous aggregates where a large amount of water is fixed. A modification of the physical-chemical environment of the slurry by addition of a peptizing agent results in destruction of the aggregates. Water originally fixed in the aggregates is liberated, the viscous friction can play a larger role in the slurry, which is liquefied. To prove these process three different kaolin-water mixtures were tested with an overpressure capillary viscometer, rotational viscometer, and experimental pipeline loop. The effect of two peptizing agents and their concentration was investigated. Even very low concentration of peptizing agent results in a significant reduction in the apparent viscosity and in the yield stress.
    PracovištěÚstav pro hydrodynamiku
    KontaktSoňa Hnilicová, hnilicova@ih.cas.cz, Tel.: 233 109 003
    Rok sběru2011
Počet záznamů: 1  

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