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Meniscus Dynamics in Bubble Formation. Part I: Experiment
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SYSNO ASEP 0330040 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Meniscus Dynamics in Bubble Formation. Part I: Experiment Title Dynamika menisku při tvorbě bublin na perforovaném patře. Díl I: Experiment Author(s) Růžička, Marek (UCHP-M) RID, ORCID, SAI
Bunganič, Radovan (UCHP-M)
Drahoš, Jiří (UCHP-M) RID, SAISource Title Chemical Engineering Research and Design. - : Elsevier - ISSN 0263-8762
Roč. 87, č. 10 (2009), s. 1349-1356Number of pages 8 s. Language eng - English Country GB - United Kingdom Keywords bubble formation ; perforated plate ; meniscus oscillations Subject RIV CI - Industrial Chemistry, Chemical Engineering R&D Projects GA104/07/1110 GA ČR - Czech Science Foundation (CSF) IAA200720801 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z40720504 - UCHP-M (2005-2011) UT WOS 000271227500001 DOI 10.1016/j.cherd.2009.03.001 Annotation The individual bubbles were produced in the bubbling modewhere the meniscus closes the orifice after each bubble detachment. The gas input was the main control parameter.The following information was obtained: gas pressure in the plenum below the plate, acoustic pressure in the liquid above the plate, and a high-speed video record of the meniscus motion inside the orifice, drilled in the plate. The meniscus behaviour was analysed and it was found that the meniscus oscillations strongly affect the subsequent bubble cycle. They are also responsible for an interesting hysteresis phenomenon. The hysteresis causes a dispersion of the bubble sizes and the bubble formation frequencies, at otherwise fixed parameters. The reason for this is seen in a strong nonlinear coupling between the final state of one cycle and the initial conditions of the next cycle. Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2010
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