simple example fails

[rentier]

I am starting with cfdof with very simple test case and I can't get it working.
It is cube 1m edge length, with air in it, and different walls temperatures.
I am interested in natural convection.
Even with simplest settings and defaults it doesn't solve, crashes after few iterations.
Steady as well as transient.

Is there something essential ignore?

I see, all this is complex, and I have to learn, but e.g. :
- why in physics model Task-GUI, if I set "incompressible" the gravity is grayed? (for natural convection in water).

Thanks in advance.

I use FC 0.19 AppImage on WSL2

[oliveroxtoby]

I am starting with cfdof with very simple test case and I can't get it working.
It is cube 1m edge length, with air in it, and different walls temperatures.
I am interested in natural convection.
Even with simplest settings and defaults it doesn't solve, crashes after few iterations.
Steady as well as transient.

Your case runs without crashing for me. If you include your full output it may give a clue as to what is going wrong.

I see, all this is complex, and I have to learn, but e.g. :
- why in physics model Task-GUI, if I set "incompressible" the gravity is grayed? (for natural convection in water).

This is because the incompressible solver doesn't support buoyancy. The compressible one can be used instead.

[rentier]

Thanks a lot!
Attached the case folder with logs, the voluminous mesh deleted.

[oliveroxtoby]

Thanks a lot!
Attached the case folder with logs, the voluminous mesh deleted.

Unfortunately I still can't reproduce the problem using OpenFOAM 8 and your case directory. Runs fine for me.

[rentier]

Ok, thanks for your time and your interest in helping. Anyway, I will try and play around for some time with cfdof and possibly learn something.