Learning Forum

[AdamCU]

Hey everyone,

I'm attempting to run a coupled fluid-structure analysis with ANSYS Workbench 17.2. I have licenses individually for Fluent and Mechanical, but even though the Fluent and Transient Structural runs work fine on their own, when coupled using the process described here (Part 1:

; Part 2:

), they error out as shown:

 +====================================================================+
 |                 System Coupling Co-Simulation Summary              |
 +====================================================================+
  Participant : Mechanical APDL (Solution 1)                            
   Version/Build Info    = Mechanical APDL Release 17.2     UP20160718
                             DISTRIBUTED WINDOWS x64  Version          
 Participant : Solution                                                
   Version/Build Info    = ANSYS Fluent 17.2.0, Build Time:Jul 27 2016
                           119:44, Build Id:10113, OS Version:win64  
 +====================================================================+
 |                              NOTICE                                |
 | An exception has occurred and has been transmitted to the coupling |
 | participants.  These participants have been disconnected from the  |
 | coupling service.                                                  |
 +====================================================================+
 +====================================================================+
 |                      System Coupling Exception                     |
 +====================================================================+
 | Origin            : Airflow (Solution)                             |
 | Error Code        : 2                                              |
 | Error Description :                                                |
 |   Fluent encountered fatal error after sync point Analysis         |
 |   Initialization: CFD Solver license [ANSYS Academic Research      |
 |   Mechanical and CFD] is not available for coupled run             |
 +====================================================================+
 System coupling run completed with errors.

Attached is an image of the runtime errors we get during the co-simulation process. 

It seems that there's an additional coupled-simulation license required for this type of co-simulation? If so, does anyone know how we can obtain this license?

Thanks a lot

[tsiriaks]

Can you try launching User License Preferences v172 (make sure all ANSYS GUI's are closed) -> then select 'Use a separate license for each application' .

Do you still get the same error ?

Thanks,

Win

[AdamCU]

That did indeed fix the problem! Thanks a lot!

[tsiriaks]

that's great ! you are welcome. Glad it helps.

Thanks,

Win