Bathtub vortex and realated gas entrainment simulation in Fluent
my aim is to simulate a bathtub vortex and the related gas entrainment phenomenon in Fluent; I'm trying to use VOF (with the Geo-reconstruct algorithm) but it seems not able to reproduce well the air/water interface and neither the vortex itself.
(I am sure, from experimental observation, that with the given boundary conditions the vortex is present!)
Any tips are welcome!
Thank in advance,
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