Original title: Flow Behavior of Model Suspensions
Translated title: Povaha toku modelových suspenzí
Authors: Kulaviak, Lukáš ; Večeř, Marek ; Růžička, Marek ; Drahoš, Jiří ; Hladil, Jindřich
Document type: Papers
Conference/Event: 18th International Congress of Chemical and Process Engineering CHISA 2008, Praha (CZ), 2008-08-24 / 2008-08-28
Year: 2008
Language: eng
Abstract: [eng] [cze]
The main object of the present investigation is to test the settling abilities of mixtures of solid particles in liquids. The key quantity here is the magnitude of the viscosity, both of the carrying liquid (water-glycerol solutions) and the effective viscosity of the two-phase mixture. Few model systems were used (glass and polystyrene pellets), to study the settling process. The sedimentation were recorded by a video camera and the resulting deposit structure was photographed. Besides, also a real suspension was tested, of geological materials (calcite, quartz, mixed geological powder, etc.). Immersion rotary viscometer Brookfield with special spindles (RVT and V spindles) was used to measure the effective viscosity of the dispersion. Objetkem zájmu je testovat schopnost sedimentace suspenze (pevné částice v kapalině). Klíčovou veličinou je dynamická viskozita nosné kapaliny (voda-glycerol) a efektivní dynamická viskozita dvoufázové směsi. Testovaly se dva modelové systémy (z hlediska pevné fáze - skleněné a polystyrénové kuličky). Usazování bylo nahráváno na videokameru a fotografovány výsledné struktury depositu. Mimo toho se zkoušely také geologické materiály (vápencový, křemenný prach, jejich směs, atd.). Měřící aparaturou byl ponorný rotační viskozimetr Brookfield s vřeteny RVT a V7.
Keywords: settling; suspension; viscosity
Project no.: CEZ:AV0Z40720504 (CEP), CEZ:AV0Z30130516 (CEP), GA104/07/1110 (CEP), GA104/06/1418 (CEP), GP104/06/P287 (CEP), IAAX00130702 (CEP)
Funding provider: GA ČR, GA ČR, GA ČR, GA AV ČR
Host item entry: Summaries 3, ISBN 978-80-02-02050-9

Institution: Institute of Chemical Process Fundamentals AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0163914

Permalink: http://www.nusl.cz/ntk/nusl-39146


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