[Klavoir]

Hi,

I want to simulate the vortex in a vessel and calculate the resulting difference in water height between the middle and near the wall of the vessel. I want to use VOF model. On top of the water layer is air. I enabled gravity. In the top of the vessel water is coming tangentially in via a pipe, creating the vortex. At the bottom water is pumped out of the vessel and moved upwards (to the same level as the water height in the vessel). For some reason I cannot get the right water height in the vessel (only a small layer on the bottom). I want to run the simulation steady state.
I am confused about specifying operating density, is it necessary and if so, should I take water or air density?
What should I define as the secondary phase?
Other tips to think about more than welcome.