Thank you for your quick response regarding this matter.

Our simulation should be in pseudo-transient is because of the steady-state give me the diverged solution. However, this problem exists only when I am trying to increase the mesh to conduct a mesh independent study for this case. Before that, when I'm using the lower mesh, the solution is fine and give me a good result.

So I just wondering, do I need to run the simulation using pseudo-transient based on your recommendation in any mesh that we would like to put for the validation purpose or only in the simulation that gives me the diverged solution? Because I'm afraid the result will be different between the steady-state approach and the pseudo-transient approach.

Thank you,

Best Regards,