Hi @igaviano, thank you for your reply.
I can defiantly try velocity inlet + pressure outlet. Like I said, my set up was mostly based on the " Tutorial: Fluid Flow Through a Non-Return Valve" and in that they used Pressure inlet + Pressure outlet.
The pump feeding the block has flow rate of 8L/min. Can I input that like this? Or is it better to use fixed value?
I had a look at my mesh. I think it’s good? There was only one tiny little non-orthogonality.
I never got a Divergence errors or warning, the sims ran fine and didn’t have any errors. Could it still be diverging?
Thank you,