Fluids

Fluids

Avoiding divergence in a transient run Fluent

    • desouzadacosta
      Subscriber

      Hi All,

      I am having divergence issue after 0.3 s (around 30000 iterations) for a transient run in Fluent:

    • Rob
      Ansys Employee
      That's been struggling for the last several time steps. Assuming you have the data file saved have a look at what's going on. I suspect something is changing more quickly than the time step can resolve, so it's probable that you'll want to reduce the time step. For P-V coupling you may find PISO to be more efficient, the PBCS doesn't give much (if any) benefit on a transient run.
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