620463.fig.008a
(a)
620463.fig.008b
(b)
620463.fig.008c
(c)
620463.fig.008d
(d)
Figure 8: Comparison of predicted and experimental data of Kocamustafaogullari and Wang [17] for superficial gas velocity of 0.51 m/s, superficial liquid velocity of 4.4 m/s, and volume fraction of 0.102; (a) gas volume fraction, (b) interfacial area concentration, (c) Sauter mean bubble diameter, and (d) axial liquid velocity.