GENERATION AND CHARACTERISTICS OF THE PRECESSION MODE OF EHD SPRAYING

A detailed description of jet and droplets formation in the ''precessi on'' mode of electrohydrodynamic spraying is given. Experiments show t hat the jet rotates around the capillary axis during the spraying proc ess, and uniformly disperses droplets in a spraying cone. This mode of spraying differs from the well-known cone-jet mode in jet formation m echanism and droplet sizes. The operating range of the precession mode in terms of flow rates and voltages was determined for distilled wate r, ethanol and ethylene glycol.