Unexpected simulation error for Tank with volume curve and CanOverflow

USEPA / EPANET2.2

Perform extended-period simulation of the hydraulic and water quality behavior within drinking water distribution systems

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Open pajarrige opened 5 months ago

pajarrige commented 5 months ago

When a model contains one or more tank with a volume curve AND CanOverflow attribute, it cannot be simulated from GUI:

simulation is OK with the toolkit.
opening the model with Epanet is OK.
when running the analysis you get "Error 206: undefined curve -16s in [TANKS] section:" error. See the .inp file attached Tank_vol_curve+overflow.inp.txt

lbutler commented 2 months ago

The Format function is missing the % character and the line should be rewritten like so:

else s := s + Format('%-16s'#9, [Data[TANK_VCURVE_INDEX]]);

I tested this over at the OWA EPANET GUI and was able to fix the bug.