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Experimental Study of Bubble Interactions with Wall.
Zedníková, Mária ; Vejražka, Jiří ; Růžička, Marek
The work deals with the experimental study of hydrodynamic behaviour of bubbles with various sizes bouncing on a wall in liquid. The aim of the work is to obtain bubble trajectory and bubble velocity. The experiments are made using a high speed camera Kodak Ektapro (max 10 000 fps). From the images, the bubble diameter, its centre, steady-state bubble rise velocity and also local velocity especially during the bouncing. The rebounding conditions are also evaluated. The results are compared with the models available in the literature.
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Tvorba bublin: CFD simulace a experimenty
Havlica, Jaromír ; Bunganič, Radovan ; Růžička, Marek ; Drahoš, Jiří
The motivation of our work is the bubble generation from orifices of a gas distributor in bubble columns. Our interest is in the detail dynamics of bubble formation, namely in investigation of the synchronous and asynchronous modes of bubbling from multiple orifices. We considered the bubble formation both form a needle and an orifice on plate. We approached the problem with both the CFD and experiment.
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