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Flow Behavior of Model Suspensions
- 1.0312978 - ÚCHP 2009 CZ eng C - Conference Paper (international conference)
Kulaviak, Lukáš - Večeř, Marek - Růžička, Marek - Drahoš, Jiří - Hladil, Jindřich
Flow Behavior of Model Suspensions.
[Povaha toku modelových suspenzí.]
Summaries 3. Praha: Process Engineering Publisher, 2008, s. 823. ISBN 978-80-02-02050-9.
[18th International Congress of Chemical and Process Engineering CHISA 2008. Praha (CZ), 24.08.2008-28.08.2008]
R&D Projects: GA ČR GA104/07/1110; GA ČR GA104/06/1418; GA ČR GP104/06/P287; GA AV ČR IAAX00130702
Institutional research plan: CEZ:AV0Z40720504; CEZ:AV0Z30130516
Keywords : suspension * settling * viscosity
Subject RIV: CI - Industrial Chemistry, Chemical Engineering
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.
Permanent Link: http://hdl.handle.net/11104/0163914
Number of the records: 1