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  3. When running an FSI case using System Coupling, the run fails in the system coupling stage with the following error: +====================================================================+ | System Coupling Exception | +====================================================================+ | Origin : Fluid Flow (CFX) (Solution 1) | | Error Code : 2 | | Error Description : | | Stopped in routine SYNP_CHKCONV_SC | +====================================================================+ This error could be seen when using either CFX or FLUENT for the fluids calculation. What can the issue be?

When running an FSI case using System Coupling, the run fails in the system coupling stage with the following error: +====================================================================+ | System Coupling Exception | +====================================================================+ | Origin : Fluid Flow (CFX) (Solution 1) | | Error Code : 2 | | Error Description : | | Stopped in routine SYNP_CHKCONV_SC | +====================================================================+ This error could be seen when using either CFX or FLUENT for the fluids calculation. What can the issue be?

Tagged: 19.1, cfx, fluid-dynamics, fsi, mapping interface, Other, system-coupling
    • April 5, 2023 at 2:32 pm
      FAQFAQ
      Participant

      This error could be caused by very poor mapping (e.g. 50%) of the structural and fluids interface. To check the mapping, when running the simulation look at the System Coupling output. Scroll down near the top of the file and look for the Solution section, just underneath here you should see the Mapping Summary. Here you will see the percentage of nodes mapped on the FSI interface. If you do see a poor mapping percentage try to change the geometry set-up to allow the geometry of the interface to match exactly/more closely – try to get as close to 100% as possible.

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