An electrohydrodynamic model for the simulation of droplet formation, mo-
tion and detachment in an electrically driven droplet generator is introduced. The nu-
merical approch is based on the coupled solution of the multiphase flow problem with the charge
continuity equation. A conduction-convection model, taking into account con- ductive, capacitive
and convective currents in the fluid, describes the charge relaxation phenomena in the moving
liquid. The charge received by the droplets during acceleration by an external electric pulse is
an important parameter influencing dynamics of droplets in the pressure chamber. The model is
illustrated with simulations of detachment of high
conductivity acetone droplets and low conductivity n-pentane droplets
