[Tleja]

Hi everyone

I'm studying hydrodynamic in Bubble column. As i seen in Experiment, bubble size of 1-2 cm was discharged from nozzle. At the moment, i used Eulerian-Eulerian model for simulating bubble behavior with Fixing bubble size of 1cm (Secondary phase).

I can't simulate this bubble column. It shows divergence in 20 iterations of first time step. I found some information from ANSYS theory about the relation of mesh size and bubble size. Therefore, I changed bubble size in my simulation from 1 cm to 0.5 mm. The well convergence simulation was found. Experimentally, the flow behaviors of 1cm and 0.5 mm bubble size are completely different. I prefer to use bubble size of 1 cm for this simulation.

How can i do with simulating big bubble size in Bubble column?
I prefers to use Eulerian-Eulerian model.

Should i use Eulerian-Eulerian with Multi-fluid VOF???

Best Regard
Tleja