This study concerns the effects that occur in a spray produced by Electrohy
drodynamic Atomization in the Cone-Jet mode. Droplet sizes and velocities w
ere measured at various places in the spray. These results are compared to
the dispersion calculated with a physical model. The model takes the drag f
orce, electric forces, and the droplet inertia into account. The results sh
ow the electrical interactions between the charged droplets. They also show
an acceleration of the gas in the center of the spray. A relation between
droplet size and droplet charge in a spray could be established. The result
s of the model confirm that the mutual electric interaction of charged drop
lets, and differences in inertia, are the reason for the size segregation e
ffect in the spray. (C) 1999 Published by Elsevier Science B.V. All rights
reserved.