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and the volume fraction oversize A is defined as the volume fraction of drop-
lets whose diameters are larger than D indicated by the Weber number We. Solid
lines in Figs. 4 through 13 represent Eqs. (35) and (36) discussed below.
Figures 4 through 7 show the data of Wicks and Dukler [29,30], Figs. 8 and
9 show the data of Cousins and Hewitt [31] and Figs. 10 through 12 show the
data of Lindsted et al. [32]. Figure 13 shows all the data shown in Figs. 4
through 12 in one figure. As shown in these figures, most of the data for
the examination of the droplet size distribution lie within i-__40% of the
mean values in the_We/X vs. A coordinate.
The mean values of the data in Fig. 13 "are fitted to the upper limit
log-normal distribution proposed by Mugele and Evance [34] and given by
•
dAE-(Cy)
_ -e .(32)
d y
Here E is a distribution parameter, and y is defined in terms of the maximum
diameter Dand volume median diameter D as
maxvm
kD
y = in D - D(33)
max
D- D
k = maxvm D(34)
vm
D
experimental data inFig.13give= 0.884 and k = 2.13max .e. D = The ex Pg•g~~(i
3.13). The value of D has been correlated by Eq. (26) .
vm
with
Therefore, one obtains a correlation for droplet distribution as
dA 0.884-0.781y2
3;7=e(35)
y = In D-D(36) 2.13D
max
Here Dis related to D by
maxvm
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