Two phase flow bifurcation due to turbulence: transition from slugs to bubbles

G. Górski (1) , G. Litak (2, 3) , R. Mosdorf (1) , A. Rysak (2)

1 Białystok University of Technology
2 Lublin University of Technology
3 LGEF - Laboratoire de Génie Electrique et Ferroélectricité

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. © 2015, The Author(s).

Mots clés: Light transmission; Flow patterns; Speech processing; Time series analysis; Mini channels; Recurrence plot; Recurrence quantification analysis; Bifurcation (mathematics); Flow of water; Two phase flow; Water flow rate; Transmission time; Statistical and Nonlinear Physics

Domaines: Sciences de l'ingénieur [physics]

G. Górski, G. Litak, R. Mosdorf, A. Rysak. Two phase flow bifurcation due to turbulence: transition from slugs to bubbles. The European Physical Journal B: Condensed Matter and Complex Systems, 2015, 88 (9), ⟨10.1140/epjb/e2015-60245-8⟩. ⟨hal-01769263⟩