circle that represents the side-view boundary (i.e. 2D shape) of a virtual
spherical drop. Since 2D shapes of larger drops deviate more froma circular
shape than those of smaller drops, the variance of the observed
data (i.e. the term in the denominator of the R2 relationship) is greater
for larger drops. Consequently, it is reasonable to expect R2 values of
larger drops to be greater than those of smaller drops.While the smaller
drops had a comparatively lower R2 values, they had a good shape correlation.
In Fig. 13, predicted and observed equilibrium shapes of drops
with d=2.6mmand 5.1mmare compared. In these comparisons, predicted
equilibrium shapes were obtained using both Beard and
Chuang's (1987) theoretical model and Thurai et al.'s (2007) empirical
fit to the shapes of drops that fell 80 m from their generation source of
a fire hose on a bridge.