Data and OpenFOAM case files corresponding to the publication: "Newtonian die-swell phenomenon revisited: theory and simulations"

This dataset contains the data underlying the figures and the OpenFOAM case files related to the following publication:Wim-Paul Breugem &amp; Yavuz Emre KamisNewtonian die-swell phenomenon revisited: theory and simulationsPhys. Rev. Fluids, 2026https://doi.org/10.1103/l1b2-blw2Corresponding author: Wim-Paul Breugem, [e-mail]<br>In this publication, the laminar jet of a Newtonian liquid emanating from a long circular nozzle into a gaseous environment is studied. Provided that gravity effects can be neglected, the flow depends solely on the Reynolds number (Re) and the Capillary number (Ca) based on the nozzle bulk velocity (Ub). At high Re, the jet contractsdownstream of the nozzle, while at low Re, the jet expands, which is known as the Newtonian die-swell phenomenon. To study the influence of Re on the jet behavior, numerical simulations were conducted for Re in the range of 4.2 till 47.4 with the open-source CFD software OpenFOAM (version 6) using the two-phase incompressible flow solver rheoInterFoam combined with an algebraic Volume-of-Fluid method to capture the interface between the jet and the surrounding gas. <br>The dataset contains the data underlying the figures in the publication as well as the OpenFoam case files for Re = 4.2.