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. Author manuscript; available in PMC: 2012 Oct 1.
Published in final edited form as: Exp Fluids. 2009 Aug 1;47(2):309–320. doi: 10.1007/s00348-009-0662-1

Fig. 6.

Fig. 6

Experimentally determined streamlines (in the bubble tip frame of reference) in the fluid surrounding a steadily propagating semi-infinite bubble calculated from ensemble-averaged velocity fields for the glycerol/Si-oil system with Ca=±0.02. The bubble is propagating at a constant velocity in the (a) positive or (b) negative direction. Dashed lines represent the location of the interface. Converging stagnation points (in the bubble tip frame of reference) are denoted by filled circles (●), diverging stagnation points are indicated by open circles (○). See Fig. 10 for complementary images.