The actual diameter of a jet at the breakup point is a function of the
jet length. In those cases where the jet is either expanding or contr
acting, it is essential to know the jet length and diameter at breakup
in order to predict drop diameter accurately. Drop diameters with sin
gle and multiple nodes were predicted by applying Tomotika's stability
analysis and a model of jet diameter at breakup. The effects of small
nozzle diameter, nozzle velocity, and viscosity of continuous phase o
n drop diameter are reported Experimental drop diameters were compared
with the predicted diameters; agreement was very good.