steady axisymmetric dpm simulation of a bubble stream in water


I'm simulating a bubble stream in water in steady conditions and in an axisymmetric domain with dpm.

I'd like to know if there are limitations linked to the bubble diameter in relation with grid size or domain size.

My problem is that I need bubbles with a 3 mm diameter, but the solution is no sense unless I use 1e-6 m diameter. I noticed that this problem occours only if the saffman lift force model is enabled.


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