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Meniscus Dynamics in Bubble Formation. Part II: Model

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    0330037 - ÚCHP 2010 RIV GB eng J - Journal Article
    Růžička, Marek - Bunganič, Radovan - Drahoš, Jiří
    Meniscus Dynamics in Bubble Formation. Part II: Model.
    [Dynamika menisku při tvorbě bublin na perforovaném patře. Díl II: Model.]
    Chemical Engineering Research and Design. Roč. 87, č. 10 (2009), s. 1357-1365. ISSN 0263-8762. E-ISSN 1744-3563
    R&D Projects: GA ČR GA104/07/1110; GA AV ČR(CZ) IAA200720801
    Institutional research plan: CEZ:AV0Z40720504
    Keywords : bubble formation * periodic bubbling * meniscus oscillations
    Subject RIV: CI - Industrial Chemistry, Chemical Engineering
    Impact factor: 1.223, year: 2009

    A mathematical model was developed to describe the subsequent bubble formation from a single orifice on a perforated plate above a gas plenum. Special attention was paid to the behaviour of the meniscus inside the orifice and its role in the bubble formation process. The model is based on the mass and momentum balances and has two stages. The first bubbling stage A involves the bubble growth, ascent, and detachment. The second waiting stage B concerns the meniscus oscillations and the simultaneous plenum pressurization. The oscillating meniscus is approximated with a simple mechanical analogue, a liquid piston. The model agrees well with the experimental data reported in Part I of this study. In particular, the model is able to describe and explain the hysteresis phenomenon observed in the measurements.

    Byl sestaven matematický model pro popis chování menisku (fázové rozhraní kapalina-plyn) v otvoru perforovaného patra v probublávané koloně po odtržení bubliny. Model vykazuje dobrou shodu s experimentálními daty uveřejněnými v předešlé části práce (viz. Díl I.).
    Permanent Link: http://hdl.handle.net/11104/0175910

     
     
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