Original title: Characterization of Turbulent Flow in a Breakup Cell.
Authors: Vejražka, Jiří ; Zedníková, Mária ; Stanovský, Petr
Document type: Papers
Conference/Event: Experimental Fluid Mechanics 2016, Mariánské Lázně (CZ), 20161115
Year: 2016
Language: eng
Abstract: 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.
Keywords: breakup cell; particle image velocimetry; turbulent flow
Project no.: GA15-15467S (CEP)
Funding provider: GA ČR
Host item entry: Proceedings of the International Conference Experimental Fluid Mechanics, ISBN N
Note: Související webová stránka: http://hdl.handle.net/11104/0268000
Rights: This work is protected under the Copyright Act No. 121/2000 Coll.

Institution: Institute of Chemical Process Fundamentals AS ČR (web)
Original record: http://hdl.handle.net/11104/0268000

Permalink: http://www.nusl.cz/ntk/nusl-263127


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