Abstract
A continuous jet changes to droplets where jet breakup occurs. In this study, x-y two-dimensional numerical analysis of jet breakup is performed using MPS method (Moving Particle Semi-implicit Method) which is a particle method for incompressible flows. The continuous fluid surrounding the jet is neglected. Dependencies of the jet breakup length on the Weber number and the Froude number agree with experiment. It is indicated that MPS method can reproduce these dependencies of the jet breakup length despite the difference of the space dimensions. The size distribution of droplets is in agreement with the Nukiyama-Tanasawa distribution which has been widely used as an experimental correlation. Effects of the Weber number and the Froude number on the size distribution are also obtained from the calculation.
