Atomization Behavior of Newtonian Fluids with an Impinging Jet Injector in Dependence upon Reynolds and Weber Numbers

Kurzfassung

The atomization behavior of Newtonian fluids and non-Newtonian gelled fluids, which show a shear-thinning behavior, with a doublet like-on-like impinging jet injector has been investigated with the shadowgraph technique. The spray behavior of both distinct Newtonian fluids and non-Newtonian gels will be presented and compared. The experiments with Newtonian fluids of different Ohnesorge numbers have been conducted in a wide range of Reynolds and Weber numbers (60 ≤ Re ≤ 30,000 and 100 ≤ We ≤ 30,000). The different observed breakup modes are presented in a Regime diagram with Reynolds and Weber numbers as parameters. The present publication gives an overview about the actual state of the investigations and a first attempt will be presented to correlate both Newtonian and gelled fluids in one Regime diagram.