Lower the Flow Rate Relaxation
The Iterations panel allows you to change the numerical relaxation parameter for both flow rate and pressure. It is recommended that you use only 0.5 or 1.0 for pressure relaxation. But lower values of flow rate relaxation can be very helpful.
A good first step is to lower the flow rate relaxation to 0.05 or 0.1. By lowering the flow rate relaxation you improve AFT Arrow's ability to obtain convergence. The cost is slower run times. In some cases, accepting the slower run times that come with flow rate relaxation is the only means of obtaining convergence. You can lower the relaxation values as low as you want, but it is recommended it not be lowered below 0.01.
Related Topics
Transfer Results to Initial Guesses
Poor Compressor/Fan Curve Fits
Troubleshooting Resistance Curves
Use the Output Window Sort Feature
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
These results do not represent a converged solution. Use only for error resolution purposes
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