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Characterization of Turbulent Flow in a Breakup Cell.

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    0470325 - ÚCHP 2017 RIV CZ eng C - Conference Paper (international conference)
    Vejražka, Jiří - Zedníková, Mária - Stanovský, Petr
    Characterization of Turbulent Flow in a Breakup Cell.
    Proceedings of the International Conference Experimental Fluid Mechanics. Karlovy Vary: Polypress, 2016 - (Dančová, P.), s. 890-896. ISBN N.
    [Experimental Fluid Mechanics 2016. Mariánské Lázně (CZ), 15.11.2016-18.11.2016]
    R&D Projects: GA ČR GA15-15467S
    Institutional support: RVO:67985858
    Keywords : turbulent flow * particle image velocimetry * breakup cell
    Subject RIV: CI - Industrial Chemistry, Chemical Engineering

    Our research focuses on breakup of bubbles and drops induced by a flow turbulence. In this contribution, we describe the experimental setup used for studying the breakup, and we characterize flow within it. The setup is a rectangular glass cell, in which a turbulent flow is generated by a set of coaxial nozzles. The flow within it is characterized by means of particle image velocimetry. From the velocity data, i) local dissipation rate (ε) is estimated using Large-Eddy PIV method, and ii) statistics of velocity difference in two points is evaluated. Estimation of ε is validated by integrating the total dissipation in the setup, which reasonably agrees with the injected kinetic energy. The probability density function of velocity difference is non-Gaussian and when properly normalized, it is universal within the setup.
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    SKMBT_C22016120713100.pdf173 MBPublisher’s postprintopen-access
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