[serene6390]

I'm working on a natural convection model. For some reason, I have to do non-dimensional way. I found someone successfully used Fluent to do non-dimensional problems by setting proper properties. I did the same way.

I compare the original governing equations with non-dimensional form, and set properties of the fluid based on that. But it's not converging, the residual of continuity can only reach around 0.2, not going lower anymore.

My actual model has a complicate boundary condition, but now I'm trying with the simple case, the Temperature is constant.

Anyone has any clue that I can try modify anything to make it converge? I'm so helpless right now.
Thanks for any advise.