Hello,

Need some idea when simulating VOF whereby the heavy fluid is also imposed with an inlet velocity. Is this allowed? Or is there a few other settings which need alterations? I keep getting divergence after a few trials by adjusting the Courant number and time step and period.

if you want vof coming in through the inlet just turn the scalar conc at the inlet to 1.0 or do you want an initial field?

I'm more like experimenting. Thanks for the first tip. How about if I want to have an initial field for my 2nd case study?

Fiddle with your initialisation parameters

Initial field for VOF problems can be easily set with different cell types

That has been done, as shown in tutorial. Its limitation is that only gravity does the job pulling the heavy fluid cell type downward while free surface calculation determines the two fluids interaction..

In my case, in addition to gravity, I would like to impose a constant inlet velocity to this heavy fluid (something like impinging jet; only that the heavy fluid is heavy liquid and its flow rate is moderate high).

I can surely fiddle with parameter settings, and was hoping if lucky (taking advantage of this free forum) if someone would share more info so that I spend lesser time fiddling.

I am at the moment trying the first suggestion as we speak..