A new classification for liquid jets dynamics

The physics of liquid jets has been attracting scientists' interest for many decades. Previous works have focused on various aspects of jets dynamics including instability, self-similarity, etc. We propose a new criterion to classify liquid jets dynamics based on a non-dimensionalization of Navier-Stokes equations, which generalises well-established scalings. We employ such framework to describe specific dynamics, e.g. breakup characteristics, drop formation and dripping-jetting transition, and identify the driving physical mechanisms of different regimes. We compare the proposed classification with experimental results.