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Very large "sum local" values in the "time step continuity errors" resulting in a crash #250

Open onurcanpiskin opened 10 months ago

onurcanpiskin commented 10 months ago

I want it to solve up to 1000, but it finishes the solution at 110 and gives an error. I would be very grateful if you could help me solve this problem.

1 2

wyldckat commented 10 months ago

Quick answers:

  1. It looks like you are using blueCFD-Core 2016.
  2. At Time = 100, you can see in the line "Time step continuity errors" that the first value for "sum local" is at the scale of 1e+8, which means that there is something very wrong with the boundary conditions or with the mesh, which results in these massive errors.
  3. The final error message can be overcome, by following these instructions:

    Only when X: is turned on, is when it's possible to get a more detailed stack trace, which is further detailed here: Setting up the work environment

  4. That said, with stack tracing turned on, you will likely only get more details about the final crash and not about why the case is configured incorrectly.

Without more information on how the case is configured, my guess is that you're trying to inject a fluid without allowing it to properly exit from the domain, or vice-versa. Or the dimensions of the geometry are incorrect, for example, it was designed with 100mm in length, but it was meshed as if it has 100m or 0.000100m in length.

Beyond this, there is a forum for OpenFOAM related questions, given that this does not seem to be a problem with our port of OpenFOAM. The forum is at https://www.cfd-online.com/Forums/openfoam/