scFLOW can handle multiphase flow using some functions.
There are many examples using the various functions of scFLOW in the “Exercise” manual.
Please check out both 'Function 17' and 'Function 18' in it.
The former examples indicate some multiphase problems using Particle Tracking function and the latter examples also indicate some multiphase problems using Free Surface function.
Whether these functions are applicable to your problems or not, please decide it yourself.
I modelled a flow region of a rectangular channel in the scFLOW preprocessor. But when I look at the results in scFLOW post, the flow region has somehow been extended automatically (see attached file). Is there any reason for this? Please let me know.
