Non-Linear Analysis of Air Pressure Fluctuations During Bubble Departure Synchronisation

Paweł Dzienis , Romuald Paweł Mosdorf , Tomasz Wyszkowski , Gabriela Rafałko


In the recent paper, non-linear methods of data analysis were used to study bubble departure synchronisation. In the experiment, bubbles were generated in engine oils from two neighbouring brass nozzles (with an inner diameter of 1 mm). During the experiment, the time series of air pressure oscillations in the air supply system and voltage changes on phototransistor were recorded. The analysis of bubble departure synchronisation was performed using a correlation coefficient. The following methods of non-linear data analysis are considered. Fast Fourier Transformation, autocorrelation, attractor reconstruction, correlation dimension, largest Lyapunov exponent and recurrence plot analysis were used to examine the correlation between bubbles behaviour and character of pressure fluctuations. Non-linear analysis of bubble departure synchronisation revealed that the way of bubble departures from two neighbouring nozzles does not depend simply on the character of pressure fluctuations in the nozzle air supply systems. The chaotic changes of the air pressure oscillations do not always determine the chaotic bubble departures.
Author Paweł Dzienis (FME / DMACS)
Paweł Dzienis,,
- Department of Mechanics and Applied Computer Science
, Romuald Paweł Mosdorf (FME / DMACS)
Romuald Paweł Mosdorf,,
- Department of Mechanics and Applied Computer Science
, Tomasz Wyszkowski (FME)
Tomasz Wyszkowski,,
- Faculty of Mechanical Engineering
, Gabriela Rafałko (FME)
Gabriela Rafałko,,
- Faculty of Mechanical Engineering
Journal seriesActa Mechanica et Automatica, ISSN 1898-4088, e-ISSN 2300-5319, (N/A 40 pkt)
Issue year2019
Publication size in sheets0.5
Keywords in EnglishBubble Departures, Alternative Bubble Departures, Nonlinear Methods of Data Analysis
ASJC Classification2210 Mechanical Engineering; 2211 Mechanics of Materials; 3104 Condensed Matter Physics
Internal identifierROC 19-20
Languageen angielski
LicenseJournal (articles only); published final; Uznanie Autorstwa - Użycie Niekomercyjne - Bez utworów zależnych (CC-BY-NC-ND); with publication
Score (nominal)40
Score sourcejournalList
ScoreMinisterial score = 40.0, 27-02-2020, ArticleFromJournal
Publication indicators Scopus SNIP (Source Normalised Impact per Paper): 2018 = 0.615
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