  The purpose of this article is to explore the role of viscoelastic properties
of polymeric solutions on the jet mode in the electrospray process. In this
research, several numerical simulations were performed to model the behavior of
electrified Newtonian and viscoelastic jets. First, used for validating
viscoelastic constitutive equations and their implementation, the benchmark
problem of the sedimenting sphere is stabilized beyond the previously suggested
threshold. Then, an electrified DI water jet was simulated, and the obtained
jet profile was compared with the experimental data from previous publications.
Finally, the proposed algorithm was used to simulate viscoelastic electrified
jets, where the effect of the Weissenberg number (Wi) on the jet profile was
examined. In agreement with the previously obtained experimental results, by
increasing the solution concentration, the asymptotic profile of the jet is
reached at a smaller length from the nozzle, while the final thickness of the
jet is slightly reduced.
