On the Thicknesses of Smooth Jets Discharged from a Fixed and a Rotating Nozzle

Abstract

The sizes of droplets produced from a continuous liquid jet depend mainly on its thickness. This paper, deals with the contractions of smooth liquid jets discharged from a fixed and a rotating nozzle through acceleration and surface tension. Formulae for the thicknesses of jets are derived theoretically, and the condition is found under which the influences of physical properties of liquid on the thickness become negligibly small. Relationship between the cases of a fixed nozzle and a rotating one is also discussed. The values computed from the formulae show a good agreement with those experimentally obtained. The results may also be applicable to filamentation of viscous liquid by means of a rotating nozzle.