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Ansys Learning Forum › Forums › Discuss Simulation › Fluids › Unusual liquid velocity and bubble size distribution by using PBM › Reply To: Unusual liquid velocity and bubble size distribution by using PBM

May 9, 2024 at 1:13 pm
zj X
Subscriber

I use default luo aggregation model and luo breakage model to simulate bubble aggregation and breakage.
When the gas does not reach the liquid surface, there is no bin size in the headspace, but when the gas breaks through the liquid surface, bin size appears in the headspace.
It looks like the gas is aggregating and breaking in the headspace, which doesn't make sense.
The bottom is the velocity-inlet for the gas. The gas rises from the bottom to the outlet.Pressure-outlet at the top，all bin fraction‘s boundary value is 0，is there mistakes in my settings?
Thanks for your patience.