I am Trying to model the flow of coaxial co flowing air atomized mist jet using Eulerian approach in ANSYS Fluent.whenever i try to run the VOF equation a patch velocity patch appears that lead to the divergence ....even with under relaxation factor reduced to 1e-6. the velocity of gas jet is around 170 m/s and the velocity of water is 0.005 m/s.
is it possible to model it or am i wasting my time....