Atomization of Liquid by Means of a Rotating Nozzle : On the Disintegration Modes and Droplet Sizes

Abstract

In order to clarify the fundamental characteristics of liquid atomization by means of a rotating nozzle, the behaviours of a water jet were observed by high speed photography, and on the other hand investigations of the variation of sizes of droplets produced from the jet were made, varying the atomization conditions with the nozzle diameter from 0.4 to 1.2 mm, the rotating diameter from 10 to 20 cm and the flow rate from 0.1 to 6 cm³/sec. It was found that the modes of disintegration were divided into five typical forms, and that each of them showed its own characteristic in the variation of droplet sizes. Detailed considerations are made on them. Finally the maximum diameter of the droplets was compared with the mean diameter.