[nikn]

Hello,
currently I am simulating an axial turbine with a pretty fine mesh (roughly about 23 million nodes and yplus below 1). The simulation is steady-state.
I used SST as turbulence model and had no difficulties with this simulation. As I want to compare these results with the Reynolds Stress models, I changed the turbulence model both to BSL Reynolds Stress and SSG Reynolds Stress model in CFX pre. I used the solution I got with SST as initial values.

Now my question: Both simulations failed to initialize and the .out-file shows the following error:

Error in subroutine GETCORE :
Oper=GRADIENT What=VEL_FL1 Where=VERTICES When=TSTEP0/LAST Action=RETURN
GETVAR originally called by subroutine CAL_RS_ICS

+--------------------------------------------------------------------+
| ERROR #001100279 has occurred in subroutine ErrAction. |
| Message: |
| Stopped in routine GV_ERROR |
| |
| |
| |
| |
| |
+--------------------------------------------------------------------+

+--------------------------------------------------------------------+
| An error has occurred in cfx5solve: |
| |
| The ANSYS CFX solver could not be started, or exited with return |
| code 255. No results file has been created. |
+--------------------------------------------------------------------+

End of solution stage.

Unfortunately I have no idea what that means and I hope that you can help me. If you need further information, just let me know. Its my first post in this forum

Furthermore: do you have general advice for simulations with Reynolds stress models? I assume that I have to change more than just the setting "turbulence model" in CFX pre when I want to get results with Reynolds Stress.

Cheers
Niklas