Where the model agrees with measured flow and where it does not, tested against 98 flow measurements covering 11 hotends and 5 materials from 7 sources.
Each tab isolates one term of the model and reads it against the measurements: predicted against measured flow and the spread of the error overall, then the hotend, the nozzle diameter and high-flow geometry, the material, and the temperature sweeps that set how flow rises with superheat.
Predictions run at whatever calibration is set on the calculator, so changing a setting there moves this page with it. Every measurement carries its source, and the table lists them in full.
MeltCalc: Hotend melt zone, flow rate and melt energy calculator