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Implications of setting operating density (vof)

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Old   February 13, 2016, 16:45
Default Implications of setting operating density (vof)
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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 (?).
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Old   February 16, 2016, 03:46
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I think it adds to the stability of the solution, well if your simulation is stable then dont worry about it 'yet'.
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