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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. 7.

Fig. 7

(a) Centerline velocity profiles for various values of Ca. (b) Radial velocity profiles at different axial locations for Ca=0.02. Ucl is the centerline velocity, Ubbl is the bubble tip velocity, and Umean is the mean velocity of the corresponding fully developed region. r/R and z/R are the radial and the axial positions normalized by the capillary tube radius. Points are the z-vector component of experimentally derived ensemble velocities, error bar indicate standard deviation of instantaneous values, and the lines are taken from the computational simulations (Smith and Gaver III, 2008).