[ClarPer]

Dear colleagues,

I am trying to use CFX to simulate the incompressible steady-state turbulent flow inside an S-shape duct. I used K-epsilon model with medium intensity, fully developed inlet boundary conditions from a straight channel at the same Re=13800, two walls with a non-slip condition, an outlet with a prescribed reference pressure of 2*atmospheric pressure (it shouldn't matter since I am using water as a fluid, not air), and two periodic boundaries which I set in 'Translational periodicity' in order to have an infinite duct in the spanwise direction.

For some reason, when I run the simulation, it writes a .res file and in the .out file there is no warnings or errors BUT I can't open the .res file.

When trying to open it, ANSYS Workbench comes with an error: 'Update failed for the Solution component in CFX. Solve ended with a nonzero exit code of 1, this could mean that SEC crashed due to an exception or when using Component RSM to a Cluster, that a Cluster command failed or it could mean SEC's non-zero solver exit code reporting mechanism is broken and the solver exited with a non-zero exit code.'

I also tried to use CFX as standalone in case it was a Workbench problem, but no luck in that either. I also tried opening the .res file using Fluent and it did not work either.

I have been trying changing several things on the simulation, but after several days trying, right now I find myself a bit desperate.

If any of you could help me, I will greatly appreciate it!!

Thanks a lot =)

[Antanas]

Originally Posted by ClarPer

... it writes a .res file and in the .out file there is no warnings or errors ...

Are you sure? Workbench told you that solve ended with non zero error code. This means that solver failed. What is in out file?

[ClarPer]

Thanks for your reply Antanas,

Unfortunately, I am sure there is no such a message in the out file. All it says at the end of the run is:

+--------------------------------------------------------------------+
| Job Information at End of Run |
+--------------------------------------------------------------------+

Host computer: ______
Job finished: Wed Dec 07 17:42:10 2016

Total wall clock time: 1.354E+01 seconds
or: ( 0: 0: 0: 13.545 )
( Days: Hours: Minutes: Seconds )

End of solution stage.

+--------------------------------------------------------------------+
| The results from this run of the ANSYS CFX Solver have been |
| written to ______________ |


I searched for errors or warnings, but none are present in the .out file. In the error message in Workbench it only sais that the non-zero error code could be a possibility, not that it actually is.
Any other idea?

Thanks

[Antanas]

Originally Posted by ClarPer

Thanks for your reply Antanas,

Unfortunately, I am sure there is no such a message in the out file. All it says at the end of the run is:

+--------------------------------------------------------------------+
| Job Information at End of Run |
+--------------------------------------------------------------------+

Host computer: ______
Job finished: Wed Dec 07 17:42:10 2016

Total wall clock time: 1.354E+01 seconds
or: ( 0: 0: 0: 13.545 )
( Days: Hours: Minutes: Seconds )

End of solution stage.

+--------------------------------------------------------------------+
| The results from this run of the ANSYS CFX Solver have been |
| written to ______________ |


I searched for errors or warnings, but none are present in the .out file. In the error message in Workbench it only sais that the non-zero error code could be a possibility, not that it actually is.
Any other idea?

Thanks

Have you tried to open res file in CFD-Post?

[ClarPer]

I did try, I am sorry I forgot to write about that. When I try to open it with CFX-Post, this error comes: 'ERROR
Error reading file '.../Turbulence/Project/GeometryTrial3_files/dp0/CFX/CFX/CFX_001.res':
Error reading number of domains (G/NZN).'

Does it sound familiar? I tried re-naming and re-defining the domains in CFX-Pre, but it didn't get better.