ie9b05048_si_001.pdf (66.36 kB)
Experimental Study of Water Jet Break-Up in and Supercritical Carbon Dioxide
journal contribution
posted on 2019-12-02, 23:29 authored by Paolo Trucillo, Roberta Campardelli, Iolanda De MarcoWater jets in systems at low pressure have been frequently
studied
and some models for the prediction of spray cone angle (θ/2),
intact-surface break-up length (L1), and
intact-core break-up length (L2) have
been developed. Complete studies of jets in supercritical receiving
medium have not been carried out; for this reason, in this work, an
experimental study on the observation of water jet break-up in supercritical
carbon dioxide has been proposed. Different operating conditions were
tested and jet characteristics in terms of θ/2, L1, and L2 were studied. The
obtained data were first fitted using the models proposed in the literature;
then, a model was developed in this work, which takes into account
the influence of pressure in the evaluation of the spray cone angle.
The proposal of a pressure-dependent correlation revealed to be effective
in the description of the sprays generated in supercritical conditions.