Two phase flow bifurcation due to turbulence: transition from slugs to bubbles
1 Faculty of Mechanical Engineering,
Bialystok University of Technology, Wiejska 45C, 15-351
2 Faculty of Mechanical Engineering, Technical University of Lublin Nadbystrzycka 36, 20-618 Lublin, Poland
3 Laboratoire de Génie Electrique et Ferroélectricité, Institut National des Sciences Appliquées Lyon, 8 rue de la Physique, 69621 Villeurbanne cedex, France
Received in final form: 21 June 2015
Published online: 23 September 2015
The bifurcation of slugs to bubbles within two-phase flow patterns in a minichannel is analyzed. The two-phase flow (water-air) occurring in a circular horizontal minichannel with a diameter of 1 mm is examined. The sequences of light transmission time series recorded by laser-phototransistor sensor is analyzed using recurrence plots and recurrence quantification analysis. Recurrence parameters allow the two-phase flow patterns to be found. On changing the water flow rate we identified partitioning of slugs or aggregation of bubbles.
Key words: Statistical and Nonlinear Physics
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