[jonasb]

Hello everyone,


I am having a problem with simulating a centrifugal compressor with a recirculation device.


I have a rotating impeller domain and a stationary recirculation domain and those two are connected by a frozen rotor interface.

At the impeller shroud, I activated the "Nonoverlap Conditions" and used a Counter Rotating Wall which is smooth. This works just fine.


But as soon as I make it a rough wall and add a Sand Grain Roughness to it, I immediately get the error message "Ansys solver exited with return code 1".

The out-file says the following:



Details of error:-
----------------
Error detected by routine PEEKCS
CDANAM = HOW
CRESLT = NONE

Current Directory : /FLOW/BOUNDCON/ZN1/BCP9/NOVARIABLES/RGH

+--------------------------------------------------------------------+
| Writing crash recovery file |
+--------------------------------------------------------------------+

Details of error:-
----------------
Error detected by routine MAKDAT
CDANAM = LVAR CDTYPE = INTR ISIZE = 174
CRESLT = OLD

Current Directory : /FLOW/ALGORITHM/ZN1/SYSTEM/VARIABLES

+--------------------------------------------------------------------+
| An error has occurred in cfx5solve: |
| |
| The ANSYS CFX solver exited with return code 1. No results file |
| has been created. |
+--------------------------------------------------------------------+

End of solution stage.



Does anyone have an idea what might be the problem?

Thanks and regards,
Jonas

[ghorrocks]

Please attach your output file.

[jonasb]

Hello,


Here is the out-file. I replaced some sensible information with ...


Thanks and regards,
Jonas

[ghorrocks]

The output file shows it crashes just after the monitor points are initialised. It seems to be looking for a variable associated with one of your monitor points and it cannot find it. Check that your monitor points are properly defined and are using the correct variable name (including case).

[Opaque]

I have seen the same error in recent releases, and you may have to contact ANSYS CFX support for a temporary workaround.

Do not recall if you need a modified configuration file.

[Gert-Jan]

Like 'yplus' versus 'Yplus'