Implications of setting operating density (vof)
 

Hey,

I'm wondering what are the implications of not being able to set operating density? I'm using a UDF as source term to use a transient gravitation model, which automatically disables operating density option.

I guess I could set gravity in the UI to zero, though.

The purpose of setting operating density has never been truly clear to me, so I guess what I'm really asking is what exacty does the setting mean? I just know that you're supposed to set it to the lighter phase (but only if all phases are incompressible) to prevent density round-off errors (?).

I think it adds to the stability of the solution, well if your simulation is stable then dont worry about it 'yet'.