Try Absolute Tolerance
Most models converge more reliably with relative tolerances, which is the default in theTolerance panel. However, some models converge much better with absolute tolerance. What this usually means is that there is at least one element of the model that is close to the real answer in absolute terms but does not lock in on a relative (percentage) basis.
If a model will not converge with relative tolerance, you can try changing to absolute tolerance. Even better, try the option to converge on either absolute or relative, which will offer the most flexibility.
Related Topics
Transfer Results to Initial Guesses
Poor Compressor/Fan Curve Fits
Troubleshooting Resistance Curves
Use the Output Window Sort Feature
Lower the Flow Rate Relaxation
Make Initial Flow Rate Guesses for Pipes
Break a Large Model Into Submodels
Try a Different Fluid, Equation of State or Accuracy Option
Using Lumped Adiabatic as a Starting Point
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