Počet záznamů: 1  

On Stability of a Bubble Column

  1. 1.
    SYSNO ASEP0388399
    Druh ASEPJ - Článek v odborném periodiku
    Zařazení RIVJ - Článek v odborném periodiku
    Poddruh JČlánek ve WOS
    NázevOn Stability of a Bubble Column
    Tvůrce(i) Růžička, Marek (UCHP-M) RID, ORCID, SAI
    Zdroj.dok.Chemical Engineering Research and Design. - : Elsevier - ISSN 0263-8762
    Roč. 91, č. 2 (2013), s. 191-203
    Poč.str.13 s.
    Jazyk dok.eng - angličtina
    Země vyd.GB - Velká Británie
    Klíč. slovabubble column ; flow regimes ; steady solution
    Vědní obor RIVCI - Průmyslová chemie a chemické inženýrství
    CEPGA104/07/1110 GA ČR - Grantová agentura ČR
    Institucionální podporaUCHP-M - RVO:67985858
    UT WOS000315614000001
    EID SCOPUS84872792249
    DOI10.1016/j.cherd.2012.07.011
    AnotaceThe governing equations based on the mass balance of the gas phase in the bubble column were formulated, together with the closures for the two typical operational regimes, homogeneous and heterogeneous. The equations were analysed for the steady state solutions and their stability. Two solutions were found for the uniform regime, one stable and one unstable. Only one stable solution was found for the nonuniform regime. These solutions were investigated as they depend on the control parameters, namely on the gas input, terminal bubble speed, and the form of the closure relations for the collective bubble speed. The two branches of the uniform solution merge in the turning point bifurcation, at large enough gas input. The nonuniform solution branch persists for all plausible parameter values. Besides these physically relevant solutions, one solution branch was identified as physically unacceptable. The physical reasons for the system stability were discussed. The linear approximation of the bubble column dynamics was performed and the relaxation time was estimated. The full nonlinear dynamics was considered too. Both the steady and unsteady behaviour of the bubble column was compared with experimental data.
    PracovištěÚstav chemických procesů
    KontaktEva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227
    Rok sběru2014
Počet záznamů: 1  

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