Make Initial Flow Rate Guesses for Pipes
If you do not provide any initial guesses, AFT Arrow will make its own guesses. On occasion, the AFT Arrow guesses are far away from reality. For some models, providing a crude initial guess for all the pipe flow rates in the system can help the model converge.
The crude guesses can be as simple as selecting all the pipes and initializing all of them to 1 lbm/sec, even though some operate at 0.1 lbm/sec and others at 10 lbm/sec.
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
Break a Large Model Into Submodels
Try a Different Fluid, Equation of State or Accuracy Option
Using Lumped Adiabatic as a Starting Point
