Try a Different Fluid, Equation of State or Accuracy Option
Convergence issues can come from Arrow failing to find valid fluid properties at a given pressure and temperature point. Options to resolve these issues include using a different fluid property library, changing the equation of state, or changing theaccuracy options in the Fluid panel.
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
Using Lumped Adiabatic as a Starting Point