Abstrakt
In the experiment, bubbles were generated from two brass nozzles with
inner diameters of 1.1 mm. They were submerged in the glass tank filled
with distilled water. There have been measured the air pressure
fluctuations and the signal from the laser-phototransistor sensor. For
analysis of the pressure signal the correlation (the normalized cross -
correlation exponent) and non-linear analyses have been used. It has been
shown that hydrodynamic interactions between bubbles can lead to bubble
departure synchronization. In this case the bubble departures become
periodic. The results of calculation of correlation dimension and the
largest Lyapunov exponent confirm that hydrodynamic bubble interactions
observed for 4 mm spacing between nozzels cause the periodic bubble
departures from two neighbouring nozzles.
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